Events in Sport
- May 7 131st Kentucky Derby: Mike Smith aboard Giacomo wins in 2:02.75
- May 21 130th Preakness: Jeremy Rose aboard Afleet Alex wins in 1:55.04
- May 25 13th UEFA Champions League Final: Liverpool beats Milan (3-3, 3-2 on penalties)
- May 28 Crusaders claim their 5th Super 10 Rugby title with a 35-25 win over the NSW Waratahs at Jade Stadium, Christchurch; Dan Carter lands 3 conversions & 2 penalties for the winners
- May 29 Indianapolis 500: Dan Wheldon wins in 3:10:21.0769 (253.637 km/h)
Deaths in Sport
- May 7 Tristan Egolf, American writer (b. 1971)
- May 7 Otilino Tenorio, Ecuadorian footballer (b. 1980)
- May 8 Nicolás Vuyovich, Argentine racing driver (b. 1981)
- May 26 Chico Carrasquel, Venezuelan baseball player (b. 1928)
- May 30 Fazal Mahmood, Pakistani cricketer (Pakistani medium-pace workhorse 1952-62), dies at 78