- May 1 Geoff Duke, English motorcycle racer (world 500cc champion 1951, 1953-55), dies at 92
- May 1 Pete Brown, American golfer (first African-American to win on PGA Tour, Waco 1964), dies at 80
- May 15 Bob Hopkins, American basketball forward and coach (Syracuse Nationals; Seattle SuperSonics), dies of heart and kidney failure at 80
- May 15 Garo Yepremian, American NFL place kicker (Miami Dolphins), dies at 70
- May 16 Dean Potter, American free climber and BASE jumper, dies in a wingsuit flying accident at Yosemite National Park, aged 43
- May 22 Marques Haynes, Naismith Memorial Basketball Hall of Fame guard (Harlem Globetrotters), dies at 88
- May 27 Erik Carlsson, Swedish rally driver, dies at 86
Doris Hart (1925-2015)
May 29 American tennis player (6 x Grand Slam singles titles; 29 x GS doubles titles), dies at 89
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions