This is a list of episodes that have been banned and/or censored.
- Sven Hoek: The scene where Ren threatens to gouge Stimpy and Sven's eyes out was censored during the Nickelodeon airing. This scene is restored in the First and Second Seasons DVD.
- Dog Show: George Liquor's name is censored in the Nickelodeon airing, instead being simple "George, American".
- Man's Best Friend: Banned from airing due to scenes of brutal violence. This episode would not air on TV until the creation of Ren & Stimpy "Adult Party Cartoon", and is available on the First and Second Seasons DVD as a bonus feature.
- Circus Midgets: Banned by Nickelodeon due to the word "midget" being potentially offensive to some viewers. Aired on NickToons Network around 2004/2005.
- Ren's Retirement: Banned by Nickelodeon due to its dark subject matter. Later aired on MTV & The Splat.
- Eat My Cookies: Banned some places due to heavy references to communism.
- Ren's Bitter Half: Banned for the same reasons as Eat My Cookies. Both episodes are available on the Seasons Three and a Half-ish DVD.
- Powdered Toast Man vs. Waffle Woman: Banned from airing after September 11, 2001, due to a scene depicting the Twin Towers being destroyed. The episode would later air on The Splat.
- Double Header: Banned due to multiple scenes of disturbing imagery.
- Ren Needs Help!: Banned for the same reasons as Double Header. Both episodes are available on the Season Five and Some More of Four DVD.
- Travelogue: Banned in some countries due to the episodes heavy use of toilet humor.
- Bell Hops/Dog Tags: Banned by Nickelodeon for unknown reasons.
- Sammy and Me: Banned due to Sammy Mantis eating people's heads off / gore. The episode did not air on Nickelodeon and instead premiered on MTV.
- The Last Temptation: Banned due to its religious subject matter. Much like Sammy and Me, it premiered on MTV and never aired on Nickelodeon.