Dizzy may refer to:

• The state of dizziness
• The computer game, Dizzy - The Ultimate Cartoon Adventure
• The entire series of computer games, of which the previous is the first: Dizzy series
• Dizzy, a video game character from the Guilty Gear series
• American jazz trumpet player and composer Dizzy Gillespie
• Jamaican trumpet player Johnny "Dizzy" Moore
• Musician - Guns N' Roses keyboardist Dizzy Reed
• Baseball player Dizzy Dean
• British Prime Minister Benjamin Disraeli
• Dizzy, a song by Tommy Roe which later became a hit for Vic Reeves.