- May 2 Francesco Friedrich, German bobsledder (4 x Olympic gold 2018, 22; 13 x World C'ship gold 2011-21), born in Pirna, Germany
- May 2 Kay Panabaker, American actress (Moondance Alexander), born in Orange, Texas
- May 3 Brooks Koepka, American golfer (US Open 2017, 18, PGA C'ship 2018, 19, 23), born in West Palm Beach, Florida
- May 3 Harvey Guillén, American actor (What We Do in the Shadows), born in Orange County, California
- May 5 Tatiana Celia Kennedy Schlossberg, American daughter of Caroline, born in NYC, New York
José Altuve (33 years old)
May 6 Venezuelan professional baseball second baseman (Houston Astros), born in Maracay, Venezuela
- May 8 Kemba Walker, American NBA player (New York Knicks), born in The Bronx, New York
- May 14 Emily Samuelson, American ice dancer
- May 15 Joe Mattock, English football player
- May 15 Stella Maxwell, Irish-New Zealand model, born in Brussels, Belgium
- May 16 Thomas Sangster, British actor (Love Actually - "Sam"; Nanny McPhee; The Queen's Gambit), born in Southwark, London, England
- May 17 Leven Rambin, American actress
- May 20 Josh O'Connor, English actor (The Crown), born in Southampton, England
- May 24 Joey Logano, American racecar driver, born in Middletown, Connecticut
- May 25 Emmet Cohen, American jazz pianist, composer (Future Stride), bandleader, and Hammond B3 organ player, born in Miami, Florida
- May 26 Zenouska Mowatt, granddaughter of English princess Alexandra
- May 27 Ekaterina Zaikina, Russian figure skater
- May 30 Dean Collins, American actor
- May 31 Erik Karlsson, Swedish ice hockey player (NHL - San Jose Sharks)), born in Landsbro, Sweden
- May 31 Liberty Irene Kasem, daughter of Casey & Jean Kasem
- May 31 Philippa So, American stage actress (Hamilton), born in Libertyville, Illinois
About May 1990
How Old? 32 or 33 years old
Generation: Millennial
Leap Year: No