- Not to be confused with Maximian
Maximilian, Maximillian, or Maximiliaan is a male given name.
List of people with the given name Maximilian or its variants
- King Maximillian Acorn, fictional character from the Sonic the Hedgehog cartoon series and comic book
- Maximillion Pegasus, fictional character on Yu-Gi-Oh
- Maximillian, main character in the PlayStation 2 video game Dark Cloud 2
- Maximillian (robot), robot from the 1979 Disney motion picture, The Black Hole
- Maximillian Arturo, fictional character on Sliders
- Maximillian Faversham, character in the radio comedy The Penny Dreadfuls Present...
- Maximillian Skinner, main (fictional) character in A Good Year
- Tsar Maximilian, hero of the eponymous Russian folk-play
- Maximilian Morrel, character in the Count of Monte Cristo
- Maxie Zeus, Batman villain who's full name is Maximilian Zeus
- Maximilian, one of the three playable geniuses in the real time strategy game, Evil Genius.
- Maximilian Gaius Von Reginrave, the imperial general invading the country Gallia in "Valkyria Chronicles"
- Maximillian Goof is Max Goof's full name.
- Maximilian Veers, Imperial General who led the assault on Echo Base in Star Wars Episode V: The Empire Strikes Back.