* ActorAllusion: In an episode of ''What's New, Scooby-Doo?'', when Daphne meets someone hired to impersonate her, she complains she is being played by an extra and asks whether Creator/SarahMichelleGellar was busy.
** One moment in the live movie might count, if Daphne's line "This must be the secret relic thingy they worship," could be considered BuffySpeak.
* AdoredByTheNetwork: Some iteration of ''Scooby Doo'' airs on Creator/CartoonNetwork ''every'' day.
* BeamMeUpScotty: Velma is notorious for always losing her glasses. In the original episodes she only dropped them twice. The same goes for Daphne getting kidnapped, it really didn't occur that often enough to be her recurring character trait in the original series.
** Actually, Velma had her glasses knocked off her face, once by Scooby, the other time after bumping her head. A third time, a bat plucked her glasses off and dropped them on Scooby's head, and a fourth instance had her glasses swept off her face from an errant bumper cart. And later, in "That's Snow Ghost," Scooby uses Velma's glasses to see the bundle of dynamite pursuing them on the log behind.
** Velma losing her glasses became a running joke based on her voice artist, Nicole Jaffe, whose glasses fell during a script reading, and she was quoted as saying, "I can't see without them."
** Lampshaded in the Johnny Bravo ep "Bravo Dooby Doo" after Velma and Johnny both grope for their displaced eyewear:
--->'''Velma:''' My glasses! I can't see without my glasses!
--->'''Johnny:''' My glasses! I can't be seen without my glasses!
** "Old Man Jenkins" has become the term for the everyman Scooby-Doo villain. While there was a suspicious old man named Mr. Jenkins in one episode of the original series, but he turned out to be innocent.
* ChannelHop: From CBS to ABC in 1976. NBC may even count, as ''Dynomutt'' was paired up with ''Godzilla'' for an hour-long show in 1981 on that network and the Scooby gang's appearances in ''Dynomutt'' were subsequently aired.
* CrossDressingVoices: Susan Blu as Flim-Flam.
* TheDanza: Vincent van Ghoul was voiced by Vincent Price.
* {{Defictionalization}}: You'd be surprised how many people have named their dogs Scrappy-Doo.
* DyeingForYourArt: For the live action film, blonde Sarah Michelle Gellar[[note]]Though she is a natural brunette[[/note]] dyed her hair red to become Daphne. Additionally brunet Freddie Prinze Jr bleached his hair blond to play Fred. Also redhead Isla Fisher became blonde to play Mary Jane.
* EditedForSyndication: Footage from act two of the very first episode, "What A Night For A Knight" is missing. It's where the gang is outside the museum as Fred is unable to open the rear door. He gets a ladder out of the Mystery Machine (which must be dimensionally transcendental to hold a ladder) and volunteers Shaggy to climb up and go in through a window high above.
-->'''Shaggy:''' Why me?
-->'''Fred:''' Because that's a small window and you're the thinnest.
** In the first season of ''The New Scooby-Doo Movies,'' scenes running roughly a minute and a half were made but not used until season two. The scenes never showed up in syndication, CN/Boomerang airings or DVD releases. Among the scenes were Jonathan Winters flipping a coin with Shaggy to see who would go up to the grist mill window ("The Frickert Fracas"), and Scooby trying to get the kids' attention to tell them he found a secret passage out of Moody Manor ("Guess Who's Knott Coming To Dinner").
** In the 1970-71 season, a minute of footage from season 1 episodes of ''Scooby Doo, Where Are You!'' were cut to make room for CBS's "In The Know" interstitials. ("In The Know" were 2-and-a-half minute educational capsules hosted by JosieAndThePussycats. It would be replaced the next season with CBS's long-running interstitial series ''In The News''.)
* HeyItsThatSound: "Where Are You" episode "Spooky Space Kook". The flying UFO used the "electronic rattlesnake" noise from the Heat Ray warming up from the ''Film/TheWarOfTheWorlds1953'' film.
* HeyItsThatVoice
** The theme song has been sung by bands such as Third Eye Blind and Billy Ray Cyrus.
*** Matthew Sweet does a terrific version of the theme on the 1995 album ''Saturday Morning Cartoons' Greatest Hits''.
** Madelyn Dinkley, Velma's sister in "Abracadabra Doo", is voiced by Danica [=McKellar=], who was best known as ''Wonder Years'' cutie Winnie Cooper.
** Tim Conway (''The Carol Burnett Show''), who voiced himself in a 1973 episode, voices Skip Jones--Fred's dad--in the 2006 DVD movie ''Scooby-Doo: Pirates Ahoy!''
** Jay Leno voices Jack O'Lantern in ''Scooby-Doo and the Goblin King''.
*** And the eponymous King is Creator/TimCurry, who also played Ben Ravencroft in ''Witch's Ghost'' and the Mastermind in the ''Night of 100 Frights'' video game, among other roles in the franchise.
** Kellie Martin (Becca on ''Life Goes On'') was Daphne's voice on ''A Pup Named Scooby-Doo.''
** Really, each incarnation is filled with this. CaseyKasem is probably the most popular, since he voiced Shaggy for about 40 years. Creator/FrankWelker also voiced Fred from the beginning, and started voicing Scooby as well. The original voice of Scooby was Don Messick, one of the most famous voice actors of the 1960s and 1970s.\\
Creator/MarkEvanier tells of a charming yet bittersweet tale about Messick. He was at Hanna-Barbera doing a recording session in 1997, when suddenly, he left, stating he couldn't do voices any longer. Everybody present sensed that Messick was retiring, so they held a retirement dinner for him. Guests did speeches, and then Messick stepped up and said "Thank you" to everyone in Scooby-Doo's voice. One guest said, "Don spent years giving Scooby-Doo his voice, and now Scooby's helping Don to express himself."
** The full complement of voice actors throughout the Scooby-Doo animated timeline:
-->'''Scooby:''' Creator/DonMessick (1969-96), Hadley Kay (1997), Scott Innes (1998-2001), Creator/FrankWelker (2002-present)
-->'''Shaggy:''' Creator/CaseyKasem (1969-97, 2002-09), Creator/BillyWest (1998), Scott Innes (1999-2001), Matthew Lillard (2010-present), Creator/ScottMenville (''Shaggy and Scooby-Doo Get a Clue'')
-->'''Fred''': Creator/FrankWelker (1969-present), Carl Stevens ("A Pup Named Scooby-Doo")
-->'''Velma:''' Nicole Jaffe (1969-74, 2002-03 DTV films), Patricia Stevens (1976-79), Marla Frumkin (1979-80, 1984), Creator/BJWard (1997-01), Mindy Cohn (2002-present), Christina Lange (''A Pup Named Scooby-Doo'')
-->'''Daphne:''' Stefaniana Christopherson (1969-70), Heather North (1970-85, 1997, 2002-03 DTV films), Creator/MaryKayBergman (1998-2000), Music/GreyDelisle (2001-present), Kellie Martin (''A Pup Named Scooby-Doo'')
* NamesTheSame: "Roller Ghoster Ride," the unused EitherOrTitle of the ''Pup'' episode "Terror, Thy Name Is Zombo," is also the title of a ''What's New'' episode. "Wrestle Maniacs" is also a title of an episode of both series.
* TheOtherDarrin: The show went through many voice actors. The only cast member to stay consistent throughout the whole series (save for ''A Pup Named Scooby Doo'') is Fred.
** Mostly averted in Brazil, with only Fred not having his original actor as of "What's New…", basically the inverse of English. While the other teens' actors [[DawsonCasting are now in their 70s]] (Scooby's in his 90s), Fred's new voice actor is in his early 30s, and he sounds believably like a teenager.
** Obviously, the English voice actors haven't been 100% consistent, but considering the franchise has been running for over 40 years, this is understandable.
** The Japanese-dubbed version of the live-action films have a top-notch cast with all the main characters:
*** Shaggy [[Creator/KeijiFujiwara is]] [[MobileSuitGundam00 Ali Al-Saachez]] and [[CrayonShinChan Hiroshi Nohara.]]
*** Freddy [[Creator/TakehitoKoyasu is]] [[WeissKreuz Aya Fujimiya]], [[VideoGame/TheKingOfFighters Shingo Yabuki]] and [[GundamWing Zechs Merquise.]]
*** Daphne [[MieSonozaki is]] [[{{Naruto}} Yugito Nii]], [[VideoGame/StreetFighterIV Crimsom Viper]] and [[GeGeGeNoKitaro Aoi.]]
*** Velma [[YurikoFuchizaki is]] [[SakuraWars Li Kouran]] (and also counts as an ActorAllusion of sorts) and [[RevolutionaryGirlUtena Anthy Himemiya]]
*** Scrappy-Doo [[KosukeOkano is]] [[FlameOfRecca Recca Hanabishi]]
*** Voodoo Maestro [[Creator/KentaroIto is]] [[{{Naruto}} Chouji Akimichi]] and [[{{Demonbane}} Kurou Daijuji.]]
** In Hungary, [[TotalDramaIsland Sadie, Beth, Noah, and Ezekiel]] first met on the set.
*** Daphne was Sadie's voice as of the World Tour.
*** Velma used to be Beth's voice in Season One.
*** Fred is Noah.
*** Shaggy was the first voice for Ezekiel.
* RomanceOnTheSet: Daphne and Fred's actors in the movie were of course a real life item.
* ScrewedByTheNetwork: When CBS brought ''Where Are You!'' back in 1974 after a two-year hiatus, Hanna-Barbera wanted to make new episodes. But CBS felt they could get just as much mileage, if not more, from repeats. CBS would cancel Scooby on August 7, 1976, a full month before the new season began. A week later, Scooby (which moved to ABC a month later) was replaced on CBS with Scooby clone ''ClueClub.''
* TalkingToHimself:
** Scooby with Scrappy after Don Messick took the voice.
** From ''Witch's Ghost'' to ''Cyber Chase'' he and Shaggy were both voiced by Scott Innes. Since Scooby and Shaggy share most scenes together, that's quite an accomplishment.
** Since 2002, Creator/FrankWelker has been the voice of Fred and Scooby.
* WhatCouldHaveBeen: Hanna and Barbera reflected in a later interview that the show was originally just going to be about 'a group of teenagers solving crimes', but 'we threw in a dog, and he turned out to be the star of the show'.\\
The dog was originally a sheepdog named Too Much, but ''WesternAnimation/TheArchieShow'' (which was also on CBS) already had Hot Dog, Jughead's pet sheepdog. An H-B staffer raised Great Danes as a hobby, so they made the dog a Great Dane. It was Fred Silverman and (indirectly) Music/FrankSinatra who gave the dog the name Scooby-Doo.\\
In its developmental stage as "Mysteries Five", there were originally five kids who, in a knockoff of ''The Archie Show'', played rock music as well as solved mysteries. Their names were Geoff, Mike, Kelly, Linda, and W.W. (as well as their bongo-playing sheepdog, Too Much). Geoff and Mike were melded to become Fred (originally Ronnie but renamed after CBS programming head Fred Silverman), Kelly became Daphne, Linda became Velma and W.W. became Shaggy.\\
In the original pitch, Velma and Shaggy were siblings. It showed in the debut episode ("What A Night For A Knight") as Velma has Shaggy's cough medicine at hand, and in "Decoy For A Dognapper," Shaggy keeps a spare pair of glasses for Velma.
* TheWikiRule: [[http://scoobydoo.wikia.com/wiki/Scoobypedia Scoobypedia]]

!!TropeNamer for:
* LetsSplitUpGang
* ScoobyDoobyDoors: It may be one of the most frequently referenced sequences in any Hanna-Barbera/Warner Animation production, if not all of western animation. Yes, that's right, Scooby-Doo is the Western equivalent of ''Anime/NeonGenesisEvangelion''.
** The gag had been used in ''WesternAnimation/LooneyTunes'' shorts long before that. One of the oldest uses was in a live-action silent comedy made in the early 1920s. Amusingly, it took place in a haunted mansion, and the ghost was revealed to be a fake.
* ScoobyDooHoax
* ScoobyStack
* ShaggySearchTechnique: Shaggy would often uncover secret passages by sheer accident.
* TheScrappy [[invoked]]
** And, by extension:
*** DamselScrappy [[invoked]]
*** EthnicScrappy [[invoked]]
*** ReplacementScrappy [[invoked]]
*** TemporaryScrappy [[invoked]]
*** TierInducedScrappy [[invoked]]
*** ScrappyMechanic [[invoked]]
*** ScrappyWeapon [[invoked]]
*** AlasPoorScrappy [[invoked]]
*** TakeThatScrappy [[invoked]]
*** RescuedFromTheScrappyHeap [[invoked]]
* YouMeddlingKids