- May 1 Robert Seguso, American tennis player (4 x men's doubles major titles; Olympic gold men's doubles 1988), born in Minneapolis, Minnesota
- May 3 Jeff Hornacek, American basketball player and coach, born in Elmhurst, Illinois
- May 11 Mark Breland, American welterweight boxer (Olympic gold 1984), born in Brooklyn, New York
- May 12 Stefano Modena, Italian racing driver, born in Modena, Italy
- May 13 Wally Masur, English-born Australian tennis player, born in Southampton, England
- May 14 Pat Borders, catcher (California Angels), born in Columbus, Ohio
- May 17 Jon Koncak, NBA center (Orlando Magic)
- May 18 Marty McSorley, Canadian ice hockey defenseman (Stanley Cup 1987, 88 Edmonton Oilers; NHL Plus-Minus Award 1991 LA Kings), born in Hamilton, Ontario
- May 20 David Wells, American baseball pitcher (perfect game 1998; World Series 1992, 98; MLB All Star 1995, 98, 2000), born in Torrance, California
- May 21 Elena Vodorezova, Russian figure skater (Olympic-1976) and coach, born in Moscow, USSR
- May 24 Ivan Capelli, Italian racing driver, born in Milan, Italy
- May 24 Joe Dumars, American Basketball Hall of Fame guard (Detroit Pistons; 6-time NBA All-Star), born in Shreveport, Louisiana
- May 24 Ken Flach, American professional tennis player (4 Grand Slam titles, 2 mixed doubles), born in St. Louis, Missouri (d. 2018)
- May 24 Rich Rodriguez, American football coach, born in Grant Town, West Virginia
- May 26 Eddie Martin Jr, jockey
- May 28 Eugene Robinson, NFL safety (Seattle Seahawk, GB Packers-Super Bowl 31)
- May 29 Claude Loiselle, Canadian hockey center, executive (NHL 1994-2002), born in Ottawa, Ontario
- May 29 Ukyo Katayama, Japanese auto racer, team manager (F1 95 starts), born in Tokyo, Japan
About May 1963
How Old? 60 years old
Generation: Baby Boomer
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions