- May 1 Charli D'Amelio, American dancer considered TikTok's biggest star, born in Norwalk, Connecticut
- May 10 The Gosselin Sextuplets
- May 22 Peyton Elizabeth Lee, American actress (Andi Mack; Doogie Kameāloha, M.D.), born in New York City
About May 2004
How Old? 18 years old
Generation: Generation Z
Leap Year: Yes