Please add examples in the order they appear in the story.

* The noise heard during The Transition is a modem dial-up signal.
* A sergeant in Chapter 3 Part 2 is reading a book called [[Literature/ThePrince The King]] by one [[Creator/NiccoloMachiavelli Niccolò di Bernardo]].
* The acting faction leaders of the Imps and the Puca are [[{{VideoGame/Bastion}} Zolf and Zia]] respectively.
* In Sugou's treasure room there's a large sword called [[VideoGame/WorldOfWarcraft The Blade of]] [[LeeroyJenkins Jenkins]].
* When Asuna approaches the Chalice of Rebirth, her hair and wings briefly turn blue. This is a reference to her avatar from Volume 6 of the novels, where she was playing as an Undine.
** As is [[spoiler:Octavia's humanoid form.]]
* While battling some mercenaries, Caramella leaps onto the roof of a hut, prompting this exchange:
-->The man turned, "Flight? A mage!" He screamed.
-->[[WesternAnimation/SamuraiJack "No! Jump good!"]] Caramella shouted as she slammed into him with her one armed shield.
* Kirche and Tabitha discussing what to do with Louise's failed summoning:
-->'''Kirche:''' That one's easy. [[WesternAnimation/PinkyAndTheBrain Are you thinking what I'm thinking]], Tabitha?
-->'''Tabitha:''' Need a Zerbst.
* One of the books on basic magical theory that Louise reads is [[WesternAnimation/{{Aladdin}} Jafar's Dissertations]] Volume 3.
* After witnessing Kino's strength, Caramella accuses him of being [[http://en.wikipedia.org/wiki/Momotaro Momotaro]].
* Krito's [[spoiler:gender-bent]] human faction disguise [[spoiler:as the swordswoman Midori]] is based off his [[spoiler:Gun Gale Online]] Avatar in canon.
* The Leprechaun representative and Lord Rute's retainer is named [[Literature/TheHobbit Torin]].
* Leprechaun Master Swordsmith Kofu is a {{Hikikomori}} genius just like Kona "Frau Koujiro" Furugoori of [[VisualNovel/RoboticsNotes Robotics;Notes]]
* During the retreat at Skiesedge one of the SAO 300 has received [[VideoGame/TheElderScrollsVSkyrim an arrow through the knee]].
* Caramella again, after being launched at Dunwell, [[Film/Hellboy2004 "You killed my partner!" The swordswoman roared. "Your ass is mine!"]]
* Drake, Morgiana's second-in-command is based on Drake Anderson from ''Anime/ReadOrDie''. His opening speech mirrors Anderson's rant at Yomiko almost word for word.
* Marina, Kurotaka's sniper, is based on her namesake Marina Wolfsted from ''VideoGame/ValkyriaChronicles''
* From the same series, Cait Sith reporter Netzel is based on her own namesake Lotte Netzel from ''VideoGame/ValkyriaChroniclesII'', right down to her dude at the end of nearly every setence VerbalTic.
* When accepting the York fleet's surrender, Morigana refers to herself as [[Myth/ArthurianLegend Morgan le Fay]].
* One of the watch officers assigned to the murder investigation is named [[Franchise/MassEffect Vakarian.]]
** The other one is [[VideoGame/DeusExHumanRevolution Jensen]].
** These two were partners in a Crossover Fanfic called Mass Effect: Human Revolution
* It is mentioned in the first chapter of [=HalO=] v2.0 that Asuna is experimenting with making noodles. Caramella makes Kino wear [[Manga/{{Naruto}} an orange jumpsuit]] for tasting.
* The city of Freelia is, in Caramella's words, "[[Literature/TheLordOfTheRings Minas Tirith]], made from sandstone, and put on an island!”
* When Kirito and company meet the Cait Sith chief beast tamer Raz for the first time, he has a small Terrorantula perched atop his head. He calls it [[VideoGame/HalfLife2 Lamar]]. Caramella laments not packing a crowbar.
* Two detectives dispersing a crowd of onlookers: “[[MoveAlongNothingToSeeHere Move along people, there's nothing to see here.]] [[Film/ReturnOfTheJedi These aren't the Faeries you are looking for.]]”
* Netzel says she's well aware that "[[UsefulNotes/WorldWarII Loose lips sink ships]]", but depriving people of information will only cause further unrest.
* Later in the chapter, Freelia is described as "having a ''Manga/FairyTail'' feel".
* The scene with a patron going into the Charming Faerie Inn, seeing Louise and walking right out is a reference to a nearly identical scene in ''WesternAnimation/TheSimpsons''.
* The editor of the in-game newspaper is named [[Literature/{{Baccano}} Nicholas]].
* The gown Midori wears for the Gala is based on the dress Kuroyukihime has in ''Literature/AccelWorld''.
* According to Rip Jack, there are [[VideoGame/HalfLife2 antilions]] in the tunnels beneath [[spoiler:de Martou manor]].
* Guiche's brothers are named after characters from ''Manga/AttackOnTitan''.
* [[{{Anime/FLCL}} “I'm simply an illusion of your youth.”; She said. “A manifestation of the feelings in your adolescent heart.” Midori shrugged his hand free, turning aside and crossing her arms beneath her chest.]]
* During her fight with Rip Jack, Morgiana uses [[TabletopGame/DungeonsAndDragons Magic Missile]].
* Morgiana calls Botan the [[http://en.wikipedia.org/wiki/Issun-b%C5%8Dshi Inch-High Samurai]].
* During the fight with the golem, Midori emulates [[{{Franchise/Nasuverse}} Unlimited Blade Works]] with the help of Guiche.
* Guiche's great grandfather [[Literature/MonstrousRegiment was in fact his obese great-grandmother mistaken for a man]], while his mother [[Literature/GuardsGuards is based on Sybil Vimes.]]
* When Louise [[spoiler:casts wandless Explosion]], there is a voice in her head, and [[spoiler:her arm is encircled with yellow runes]], just like [[spoiler:when [[Franchise/LyricalNanoha Nanoha]] casts bombardment spells]].
* The Imp assassin guild, Hogei-sen, are described as looking like the Whaler's from ''VideoGame/{{Dishonored}}''.
** The [[http://dishonored.wikia.com/wiki/Blink Blink]] spell comes from the same source.
* “Hardly in need of forgiveness.” Julio answered, his smile returning. “[[TabletopGame/{{Warhammer40000}} Blessed is the mind too small for doubt]], Father Andre.”
* In Chapter 12 Part 1 Yui does what is basically [[spoiler:a MagicalGirl TransformationSequence]]. According to Word of God it was [[spoiler:based specifically on [[Franchise/LyricalNanoha Vivio]]]]
* While they are dueling:
-->[[spoiler:Heathcliff: “The only man to ever manage [to injure me] was Kirito-kun.” (Eyes narrowing dangerously) “I admit I was most surprised during our duel.”]]
-->Yui: [[Film/TheEmpireStrikesBack You'll find I'm full of surprises.]]
* Bishop is reading [[http://en.wikipedia.org/wiki/The_Fall_of_Hyperion The Fall of Hyperion]].
* Jensen mentions he had been [[{{Literature/Durarara}} working in Ikebekuro and complains about the Color Gangs, bouts of mass hysteria, and a rider on a motorcycle with no headlight.]]
* The [[spoiler:old Jotunn]] resembles [[Film/PacificRim Cherno Alpha]].
** The [[spoiler:young one]] has glowing eyes and a glowing heart, just like Gypsy Danger.
* Irene's 'counting finger' in Arrun Parallel Story is a shout-out to the confession scene in Manga/FullmetalAlchemist.
* Looking at sleeping Yui, Kirito makes a mental note to ask her in the morning if she remembers any [[Literature/DoAndroidsDreamOfElectricSheep electric sheep]].
** The dream she is having is itself a shout out to a RecursiveFanfiction short by aightaight.
* Klein at one point refers to Louise as [[WesternAnimation/MyLittlePonyFriendshipIsMagic Pinkie Pie]].
* [[spoiler: Sword Shiori's male human disguise is named [[Series/SpaceSheriffGavan Gavan]].]]
* The Bronze Valkyries Technique [[Manga/FullmetalAlchemist has been passed down the Gramont line for generations!]]
* During his duel with General Belgen de Gramont, Kirito uses a weapon enchantment [[Literature/ShakuganNoShana <>]].
* Klein tells Caramella she has [[{{Webcomic/Spinnerette}} Girl Abs]].
* [[{{VideoGame/Borderlands}} "This is going to take a while, and we'll need to get you out that armor, but hey, who needs their friends when they have me and my ''scary'' needles?"]]
* The latest Kurotaka Name-chan is Kuro, from the SAO [[http://swordartonline.wikia.com/wiki/Sword_Art_Online_-_Girls_Ops_Volume_01 Girl Ops]] manga.
* In v3.0, chapter 4, part 2, a mage officer [[https://bulbapedia.bulbagarden.net/wiki/Pok%C3%A9mon_Square#Pelipper_Post_Office receives a package by pelican]] in a nod to how Pelipper run the postal service in [[{{VideoGame/PokemonMysteryDungeon}} Pokémon Mystery Dungeon]]. [[https://zelda.fandom.com/wiki/Trill_(Twilight_Princess) Said pelican, "hadn't stopped pestering…until it had been paid."]]
* Earl of Bernard describing his late brother: "[[Film/ReturnOfTheJedi I found my brother's lack of faith . . . disturbing]] at times"
* The vaults of the Tudors are said to house many powerful relics, among them [[Film/HellboyIITheGoldenArmy The Seventy Companies of Seventy Golden Knights]], the [[Literature/BookOfGenesis Garden of the Tree of Knowledge]], the [[WesternAnimation/HeManAndTheMastersOfTheUniverse1983 Sword of Grarhauss]], and the [[Literature/HonorHarrington First Ship Hringhorni]].
* Aki opens a secret door only to be blasted by a wind hammer. Her comment upon getting back up: [[VideoGame/TheElderScrollsVSkyrim “Wow. Fus ro da!”]]
* There is a dagger in the Saxe Gotha vault that [[Literature/TheHobbit glows blue when the wielder is in an imminent danger]].
* Asuna mentions that there's supposed to be a giant field boss somewhere in the Desert Zone around Gaddan, called [[Franchise/{{Dune}} Old Man of the Desert]] ([[spoiler:i.e Shai-Hulud]]).
* The Salamander Not-Twins are named [[{{Literature/Wicked}} Elfi and Galinda]]
* Suisen's comment after Klein suggests swimming in the Ragdorian lake: “Fishbait ba!” The Pixie tucked into Argo's cloak repeated. “[[Film/TheWizardOfOz For <>, and <>, and <>, oh my chyaa!]]”
* Suisen again, after Asuna expresses disbelief at the amount of information she can remember: "I'm a collaborative resource that anyone can contribute to or edit ba! I don't even need donations chyah!"
* [[spoiler:During the battle at the Ragdorian Lake resort]] Kofu imitates the [[Anime/TengenToppaGurrenLagann Kamina pose]].
--> “A few seconds? Huh . . . J-Just who do you th-think I am!” The slender katana in her right hand tapped against her shoulder as she took a step forward.
* [[Series/SesameStreet 'One of these is not like the other']] thinks Argo as she plays a game of spot the difference.
* The bosses that accompany Solomon are based on the demons of the Literature/ArsGoetia.
* Upon seeing [[spoiler:Octavia's power-reduced form]], Argo complains that they were essentially in a giant fight against [[spoiler:[[Anime/PonyoOnTheCliffByTheSea Ponyo.]]]]
** [[https://tvtropes.org/pmwiki/pmwiki.php/Anime/PuellaMagiMadokaMagica Octavia]] is a [[http://i.imgur.com/SllgAlM.jpg giant mermaid queen with silver armor]] and a [[http://img1.ak.crunchyroll.com/i/spire3/49ea3968bd3ca63d9ff03fbd77a081a71387124944_full.jpg giant spear]], who spawns a [[http://wiki.puella-magi.net/Barrier#Barrier barrier]] around her when her boss fight is triggered. The main source of her power is from a [[http://nopybot.com/wp-content/uploads/2011/02/madoka08-02.jpg blackened, pearl shaped gemstone]], and her ''true'' form looks something like ''[[http://simchamber.net/uploads/1303555806/med_gallery_10_4_76689.png this]]''. Not to mention, her [[http://wiki.puella-magi.net/Oktavia_von_Seckendorff name]] itself.
* Matilda's contact in Saxe Gotha is a talented forger named [[http://thief.wikia.com/wiki/Basso Basso]]
* [[VideoGame/PapersPlease “Papers. Please.”]] asks the guard at the Meddland on Rie checkpoint.
* There is [[Theatre/RomeoAndJuliet at least one tragedy featuring the Potion of the Living Death as a major plot point]].
* Greer: “That, Monsieur, was a different time. [[Film/TheEmpireStrikesBack I [am] altering the deal. Pray I do not alter it further.]]”
* Sword Shiori: [[Film/TheWizardOfOz “Goblins, and Griffins, and Waldriders, oh my.”]]
* When asked by the children for a bedtime story, Shiori ends up retelling the ''Franchise/StarWars'' original trilogy, complete with sound effects.
* When Yui first enters the classroom, she makes the observation [[WebAnimation/{{RWBY}} "New people were just friends she hadn't met yet"]]
* Dagger Dogs are basically [[VideoGame/TalesOfVesperia Repede as a species]].