Events in Sport
- May 6 132nd Kentucky Derby: Edgar Prado aboard Barbaro wins in 2:01.36
- May 13 English FA Cup Final, Millennium Stadium, Cardiff (71,140): Liverpool beats West Ham United, 3-1 on penalties after 3–3 (a.e.t.); Reds 7th title
- May 17 14th UEFA Champions League Final: Barcelona beats Arsenal 2-1 at Saint-Denis
- May 20 131st Preakness: Javier Castellano aboard Bernardini wins in 1:54.65
- May 21 The Swedish ice hockey team Tre Kronor takes gold in the World Championship, becoming the first nation to hold both the World and Olympic titles separately in the same year.
- May 27 NHL Western Conference Final: Edmonton Oilers beat Anaheim Ducks, 4 games to 1
- May 27 Crusaders retain their Super 14 Rugby title with a 19-12 win over the Wellington Hurricanes at Jade Stadium, Christchurch; Dan Carter kicks 4 penalties and a conversion for the winners
- May 28 Indianapolis 500: Sam Hornish Jr wins in 3:10:58.7590 (252.804 km/h)
Baseball Record
May 28 Barry Bonds hits his 715th career home run, passing Babe Ruth on the MLB all-time list
Barry Bonds
Babe Ruth
Weddings in Sport
- May 6 Former WWF Women's Champion Sable (38) weds IWGP World Heavyweight Champion Brock Lesnar (28) in Medina, Minnesota
- May 6 Race car driver "Champ Car World Series" two time winner Sebastien Bourdais (27) weds Claire Bagot at Cathedral Saint-Julien in Le Mans, France
- May 13 British football star player Gary O'Neil (22) weds Donna Guerin in Highclere Castle, Hampshire
- May 19 "Liverpool" goalkeeper Pepe Reina (23) weds Yolanda Ruiz in Cordoba, Spain
- May 20 Race car driver Jacques Villeneuve (35) weds Johanna Martinez at a civil ceremony in Switzerland
- May 26 Soccer star player Joshua Kennedy (23) weds Australian Opals player Jacinta Hamilton at St. Joseph's Catholic Church in Port Melbourne
Deaths in Sport
Floyd Patterson
May 11 Floyd Patterson, American boxer (world heavyweight champion 1956-59, 1960-62, Olympic gold 1952), dies of prostate cancer at 71
Floyd Patterson
- May 21 Spencer Clark, American racecar driver (b. 1987)
- May 23 Kazimierz Górski, Polish footballer (b. 1921)
- May 26 Kevin O'Flanagan, Irish athlete and physician (b. 1919)
- May 26 Ted Schroeder, American tennis player (US Open 1942, Wimbledon 1949), dies of cancer at 84
- May 27 Craig Heyward, American football player (b. 1966)
- May 28 Thorleif Schjelderup, Norwegian author and ski jumper (b. 1920)