!!Yusaku Godai
->Voiced by: Creator/IsseiFutamata (JP), Jason Gray-Stanford and Creator/BradSwaile (EN)

The protagonist of the series. He lives in Room 5. He is a poor 20-year-old ronin studying for his college entrance exams after failing in the past year. He is madly in love with Kyoko.
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* AccidentalPervert
* AnguishedDeclarationOfLove
* [[spoiler:BabiesEverAfter: With Kyoko.]]
* BelligerentSexualTension: With Kyoko.
* BettyAndVeronica: The Betty to Mitaka's Veronica.
* BewareTheNiceOnes
* BrownEyes
* ButtMonkey
* ChivalrousPervert: He may ogle Kyoko all the time but he would never coerce her into doing something she doesn't want to.
* CluelessChickMagnet: He sometimes doesn't realize just how good-looking he is.
* TheDitherer: To his own detriment, Kyoko's annoyance, and the great comic enjoyment of everyone else. He never grows out of it, but he does learn to take responsibility for the decisions he ''does'' finally make.
* DoggedNiceGuy: To Kyoko.
* DrowningMySorrows: With his best buddy.
* GetAHoldOfYourselfWoman: He one time slapped [[spoiler: Kyoko]], because she was just going too far in an argument they were having.
* [[spoiler:HappilyMarried: To Kyoko.]]
* InnocentlyInsensitive: He can come off as a jerk, but he doesn't ''mean'' it.
* LikesOlderWomen: Though Kyoko is only about 2 years older than him.
* LongingLook: Many times for Kyoko. He just loves watching her taking care of her job.
* LoveAtFirstSight: Kyoko enters the scene, he falls head over heels for her. Hard. ''Very'' hard.
* RidiculouslyAverageGuy
* RomancingTheWidow: With Kyoko.
* {{Ronin}}
* SecondLove: For Kyoko, although she has a hard time coming to terms with it.
* SensitiveGuyAndManlyMan: The Sensitive Guy to Shun's Manly Man.
* ShirtlessScene: Several times and it can be seen that he has a quite nice body all in all.
* StarvingStudent: Godai works to pay for his studies, but he never has money for anything. And when he has some money, he spends it on presents for Kyoko.
* UmbrellaOfTogetherness: Sharing an umbrella was used many times for him and Kyoko as a loving gesture.
* UnluckyEverydude
* WillTheyOrWontThey: The relationship with Kyoko was teased througout. [[spoiler: TheyDo. At the end, he and Kyoko get married and have a daughter.]]
* YankTheDogsChain: Happens to him SEVERAL times over the course of the story.

!!Kyoko Otonashi
->Voiced by: Creator/SumiShimamoto (JP), Ellen Kennedy (EN)

The female protagonist of the series. She is a beautiful, 22-year-old widow who takes on the task of managing a broken-down boarding house. She lives in the manager's room.
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* ArmorPiercingSlap: Due to her latent {{Tsundere}}-ness.
* [[spoiler:BabiesEverAfter: With Godai.]]
* BelligerentSexualTension: With Godai.
* BettyAndVeronica: In a way she has been both; while she is the Betty to Ibuki's Veronica, she is the Veronica to Kozue's Betty.
* CannotSpitItOut: For all the grief she gives Godai over his reluctance to break up with Kozue, Kyoko is equally guilty in terms of her relationship with Shun Mitaka. Though it's clear that she cares for him, it's also blatantly obvious that she doesn't see Mitaka as somebody she wants to marry. However, she doesn't say ''anything'' when Mitaka breaks off his engagement to Asuna to be with her, nor does she deny a relationship when Asuna politely confronts her about it. Even after [[spoiler: meeting his parents, and being whisked away by Shun while Godai is screaming after them]], she doesn't spit it out that she doesn't feel that way for him until the ''very last minute''.
* CantHoldHerLiquor: Usually avoids drinking too much as a result.
* ClingyJealousGirl: Has shades of this. She doesn't like Godai seeing other girls but still bravely resists Ibuki's provocations.
* DrivesLikeCrazy: When she's upset.
* DudeMagnet: Unwittingly.
* [[spoiler:FirstGirlWins: Though is the first case of this in a RumikoTakahashi series.]]
* [[spoiler:HappilyMarried: To Godai.]]
* HeIsNotMyBoyfriend: In regards to Godai.
* {{Landlady}}: TropeCodifier
* MayDecemberRomance: With her late husband.
* TheMourningAfter: Has a hard time letting go of her late husband.
* PluckyGirl
* SilkHidingSteel: The only thing keeping Maison Ikkoku from descending into chaos.
* SingleWomanSeeksGoodMan: She doesn't like jerks, something both Mitaka and Godai know and use in order to get her to choose between them.
* StepfordSmiler: Despite her sunny disposition, she's still mourning her late husband.
* TeacherStudentRomance: She met her late husband while he was working as a temporary teacher at her high school.
* {{Tsundere}}: A sweet type B that only gets mad with a good reason. Kyoko's normally bright and pleasant, until Godai (usually) inadvertently does something to her displeasure.
* WidowWoman
* WillTheyOrWontThey: With Godai.
** [[spoiler:TheyDo: At the end, she and Godai get married and have a daughter.]]
* YamatoNadeshiko: Subverted. Her perfect Japanese housewife persona hides her repressed {{Tsundere}} nature and it's a way to cope with the loss of her husband.

!!Shun Mitaka
->Voiced by: Creator/AkiraKamiya (JP), John Payne (EN)

A wealthy, educated young man who hails from an elite family. Mitaka works as a ladies' tennis coach more out of love for the sport than any need for financial support.
----
* AmbiguouslyBrown: He is ''very'' tan-skinned in both the anime and the manga.
* ArrangedMarriage: With Asuna.
** PerfectlyArrangedMarriage: She is head over heels in love with him and after [[spoiler:proposing to her due to a [[MistakenForPregnant misunderstanding]]]], he warms up to the idea a bit more, [[spoiler:and eventually falls in love and marries her]].
* [[spoiler:BabiesEverAfter: With Asuna.]]
* BettyAndVeronica: The Veronica to Godai's Betty.
* TheCasanova: Known for his romantic conquests, he actually has to convince Kyoko that he isn't all about sex.
* CockFight: Whenever Godai and him meet, you can be sure this will happen if Kyoko is around.
* ComfortingTheWidow: Often accused of doing this.
* [[spoiler:HappilyMarried: To Asuna.]]
* IfICantHaveYou: Feeling that [[spoiler: he was indeed losing to Godai]], he briefly delved into this.
* JerkWithAHeartOfGold - JerkWithAHeartOfJerk: Does have a slight tendency to go from one to the other.
* LadykillerInLove: For Kyoko.
* MeaningfulName: "Shun" means "twinkle".
* RichIdiotWithNoDayJob: Although not an idiot, it is clearly implied that he's so freaking ''loaded'' that he doesn't need to work.
* TheRival: To Godai.
* SensitiveGuyAndManlyMan: Manly Man to Godai's Sensitive Guy.
* [[spoiler:ShotgunWedding: After a previous drunken night with Asuna, Mitaka hears that "she" is pregnant. He assumes that he got Asuna pregnant, and vows to marry her to set things right. After he proposes and everything is set in stone, he discovers that her dog is the one who had actually been knocked up by his dog.]]
* TallDarkAndHandsome: The best-looking male character of the series.
* ThanksForTheMammary: Happened one time when he tried to prevent Kyoko from falling.
* TwinkleSmile: Iconic of his character.
** This seems to run in the family. Even with the pets of said family.
* [[WhyDidItHaveToBeSnakes Why Did It Have To Be Dogs?]]: Hilariously dog-phobic! [[spoiler:He gets better.]]

!!Hanae Ichinose
->Voiced by: Kazuyo Aoki (JP), Daphne Goldrick and Kathy Morse (EN)

A short, middle-aged woman who is rarely seen sober. She lives with her husband and her son, Kentaro, in Room 1.
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* AdaptationalAttractiveness: She's overweight in the manga/anime but thin in live action adaptations.
* AlcoholicParent
* AmazinglyEmbarrassingParents
* ApronMatron
* EmbarrassingFirstName: Her first name means: "flower branch".
* FatGirl
* GenericCuteness: Deliberately averted.
* GossipyHens: Her and the neighbours.
* HardDrinkingPartyGirl
* JerkWithAHeartOfGold: While Akemi and Yotsuya may occasionally do a PetTheDog scene or two, Hanae does this more often as she is very much a TeamMom in the show.
* TheMatchmaker
* TeamMom

!!Yotsuya
->Voiced by: Creator/ShigeruChiba (JP), Gerard Plunkett and RonHalder (EN)

A mysterious man who finds enjoyment in mooching, voyeurism, and generally tormenting his next-door neighbor Godai. He lives in Room 4.
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* AgeLift: While he was of a VagueAge in the manga/anime, in live action adaptations, he tends to get played by clearly middle aged actors.
* AccentAdaptation: Yotsuya's formal way of speaking is adapted into English as a quasi-British accent.
* BunnyEarsLawyer
* CloudCuckooLander
* CovertPervert: Has a voyeuristic streak a mile wide.
* {{Expy}}: Rumiko Takahashi's Rumic World manga ''Dust Spurt'' has a secret agent character named Mr. Sekhoi who looks exactly like Yotsuya. This is the source of some fan speculation that they are the same person.
* FakeBrit: Yotsuya's accent in the Viz English dubs. To be fair, his first dub actor, Gerard Plunket is an Irish born Canadian. Ron Halder, his replacement post episode 36, however, is American but does a very seamless transition from his predecessor.
* IdenticalGrandson: He looks exactly like his grandfather, causing a bit of confusion when his likeness appears to show up in old photos, adding to the mystery who he is and what he does.
* JerkAss
* OnlyOneName: His given name is unknown.
* PornStash: Early in the series he was caught trying to leave a store with one until all the porno magazines were falling out of his coat though.
* SecretAgent: Highly suspected of being this.
* ThereWasADoor: One time used a log to break into Godai's room and spy on him.
* WhatExactlyIsHisJob
* {{Yakuza}}: Highly suspected of being this.


!!Akemi Roppongi
->Voiced by: Yuko Mita (JP), Creator/JanyseJaud (EN)

A boozy bar hostess who is usually known to lounge around wearing skimpy lingerie clothings while hanging around Ikkoku. She lives in Room 6 and works a short distance away in a bar named Cha-Cha Maru.
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* BrutalHonesty: When she has a point to make, don't expect her to be diplomatic, especially when she's sober.
* DeadpanSnarker: Likes to snipe at Godai and Kyoko for her own amusement.
* FieryRedhead
* HookerWithAHeartOfGold: A variation. She isn't a hooker but late-night barmaid which is regarded as somewhat similar in Japan (even though sex isn't necessarily involved). As for the heart of gold, it shows up later in the series when she [[spoiler: decides to step in and trigger Kyoko's jealousy and force her to be more honest with herself with regards to Godai]].
* LadyDrunk
* LastMinuteHookup: With Master.
* MsFanservice
* [[spoiler:TheReasonYouSuckSpeech: Akemi lays a brief but ''huge'' one on Kyoko after Kyoko's ultimate hissy-fit towards Godai.]]
-->[[spoiler:'''Akemi:''' I can't believe you. Crying and carrying on over a guy you won't even let hold your hand. What's wrong with you? You think I'm so desperate I'd bother to steal a man from a neurotic twit like you? Grow up!]]
* ShesGotLegs
* TheTease: More than being actually promiscuous, she is more about teasing than actually doing it.
* UrbanLegendLoveLife: Despite her sultry demeanour and her job, she hasn't been with that many men.

!!Kentaro Ichinose
->Voiced by: Creator/ChikaSakamoto (JP), Creator/SaffronHenderson and Sharon Alexander (EN)

Hanae's son. He is a grade-school-aged brat, generally seen trying to get between his mother and her bottle.
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* BrattyHalfPint
* OnlySaneMan: At times.

!!Nozomu Nikaido
->Voiced by: Creator/RyoHorikawa (JP)

Originally intending to move into an upscale establishment called "Rikkoku-kan", a typographical error on the lease papers brings him to Maison Ikkoku relatively late into the story as an accidental tenant. He led a relatively sheltered life before entering the story, and he moved into Maison Ikkoku as he started college against the wishes of his protective mother.
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* AdaptedOut: He does not appear in the TV anime.
* BackForTheFinale: Appears in a MissingEpisode, right before Godai and Kyoko's wedding.
* TheDitz
* {{Foil}}: To Yotsuya whom he dislikes a lot.
* TheUnseen: A manga-only character.

!!Kozue Nanao
->Voiced by: Creator/MinaTominaga (JP), Rochelle Greenwood and Creator/AnnaCummer (EN)

Godai's steady date and generally serves as an obstacle for him in his pursuit of Kyoko.
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* BettyAndVeronica: The Betty to Kyoko's Veronica
* DemotedToExtra: During the middle of the series when Ibuki was becoming more of a recurring character she only occasionally appeared. This was even given a little bit of a LampshadeHanging near the end of the series.
* HappilyMarried: She ends up marrying a co-worker, Kentaro, at the bank she works at and moves away to Nagoya with her new husband.
* NaiveEverygirl
* PutOnABus: Literally when she figures Godai is in love with someone else than her.
** TheBusCameBack: For the epilogue where we see [[spoiler: that she has moved on to a whole new life]].
* PowerHair: Subverted. She ''does'' have the hairstyle but she is no leader.
** Even stranger for fans familiar with Tominaga's other work, you half expect her to give up Godai for her [[DominionTankPolice tank]], or her [[{{Patlabor}} Police Robot]].
* RomanticFalseLead: A RareFemaleExample.
* RomanticRunnerUp

!!Ibuki Yagami
->Voiced by: Creator/YurikoFuchizaki (JP), Alexandra Carter (EN)

A high school student who develops a crush on Godai while he works as a student-teacher.
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* BettyAndVeronica: The Veronica to Kyoko's Betty.
* BitchInSheepsClothing: Acts nice and all, but it's only a veneer that hides a much less appealing personality.
* ClassRepresentative
* ClingyJealousGirl: Much more than Kyoko. She's ''very'' jealous of Kyoko and calls her "the widow", which is a derogatory way to refer to someone in Japanese.
* DaddysGirl
* ExpositoryHairstyleChange
* FilleFatale
* GirlishPigtails
* HotForTeacher
* InLoveWithLove: She appears to be more interested in being in a tragic romance than in Godai himself.
* JerkWithAHeartOfGold: While she is a lot less sympathetic than the likes of Kozue and is often seen as a temperamental brat who needs to learn that she can't always get what she wants. However Ibuki does occasionally get some sympathetic moments and even occasionally does try to help Godai out.
* LovingAShadow: She developed her crush on Godai after misinterpreting him as a sort of tragic romantic hero.
* ManipulativeBitch: Will do ''anything'' to get what she wants.
* TheRival: Of Kyoko. And a nasty one at that.
* StalkerWithACrush
* UnrequitedLoveLastsForever: At the end of the series, Ibuki goes to an all-girls college still hanging into the dream that she can be with Godai someday.
* {{Yandere}}: Ibuki is a saner version of this towards Godai. While she is not a psychopath she is still a StalkerWithACrush and a good case for a restraining order.

!!Asuna Kujo
->Voiced by: Creator/HiromiTsuru (JP), Valerie Sing Turner (EN)

A classically demure Japanese maiden from a wealthy family. Her family and Shun's uncle have arranged a traditional Japanese marriage between her and Shun (against Shun's wishes).
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* ArrangedMarriage: With Mitaka.
** PerfectlyArrangedMarriage: She is head over heels in love with him and after [[spoiler:proposing to her due to a [[MistakenForPregnant misunderstanding]]]] he eventually falls in love with her and [[spoiler:they get married]].
* [[spoiler:BabiesEverAfter: With Mitaka.]]
* FragileFlower: She looks so pure and fragile that even Godai and Kyoko where shocked when they see her [[spoiler:pregnant with Mitaka's children]].
** Shown in a huge way [[spoiler:when Shun tries to break off their engagement initially]]. She faints on the spot and when she wakes up she immediately cries, much to Mitaka's discomfort. Shown even more when she tries to join Mitaka's tennis club and meets her "rival" Kyoko. Even though she feels anguished inside she can't bring herself to be mean to Kyoko and is instead very awkwardly pleasant to her.
* [[spoiler:HappilyMarried: To Mitaka.]]
* IFeelAngry: Never angers. When she knows about the existence of Kyoko, she just kindly tells her that she doesn't approve of Kyoko courting her fiancÚ.
* [[spoiler:MistakenForPregnant: After a previous drunken night with Asuna and hearing "she" is pregnant, Mitaka assumes that he got Asuna pregnant, and vows to marry her to set things right. After he proposes and everything is set in stone, she reveals it's her dog who's pregnant.]]
* NaiveEverygirl
* {{Ojou}}
* YamatoNadeshiko

!!Soichiro-san
->Voiced by: Creator/ShigeruChiba

Kyoko's dog. He is a large and white Samoyed dog that was found as a stray by Soichiro Otonashi, Kyoko's late husband.
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* BigFriendlyDog
* CanisMajor
* DeadGuyJunior: He is named after Kyoko's late husband.
* DogsAreDumb: Often accused of being as stupid as a broomstick.
* FormallyNamedPet: Soichiro Otonashi attempted to name him "Snowy", but for whatever the reason he always responded to Soichiro-san.

!!Master
->Voiced by: Creator/NorioWakamoto (JP), DavidKaye (EN)

Akemi's boss. He tolerates Akemi's obvious incompetence as a waitress because his feelings for her are more than just that of a boss to an employee.
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* CommutingOnABus
* LastMinuteHookup: With Akemi.
* LocalHangout
* OnlyKnownByTheirNickname
* OnlySaneMan: Oftentimes misunderstandings or clarifications happen at his bar but he's the only person who gets what's going on because he's the only ''sober'' party. And since most of these happenings get more misconstrued by the drunken antics of the characters, he's often the one stepping in to clarify what everything was ''really'' about.
* SatelliteCharacter

!!Soichiro Otonashi
->Voiced by: Creator/HideyukiTanaka (JP), DavidKaye (EN)

Kyoko's deceased husband and former high school teacher. Kyoko always spoke very highly of him.
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* TheFaceless / FaceFramedInShadow: When he is in flashbacks.
* TheLostLenore: To Kyoko.
* PosthumousCharacter
* ShrinkingViolet
* TeacherStudentRomance: He met Kyoko while he was working as a temporary teacher at her high school.