- May 1 Guggenheim Partners make the largest ever purchase of a sports franchise after buying the Los Angeles Dodgers for $2.1 billion
Sports History
May 2 Barcelona football player Lionel Messi breaks the European goal-scoring record with 68 goals
- May 5 138th Kentucky Derby: Mario Gutierrez aboard Ill Have Another wins in 2:01.83
FA Cup Final
May 5 English FA Cup Final, Wembley Stadium, London (89,102): Chelsea beats Liverpool, 2–1; Didier Drogba scores winner for Blues' 7th title
- May 13 Manchester City beats QPR 3-2 at City of Manchester Stadium to win English Premier League title on goal difference from Manchester United; Citizens recover from 2–1 down with 2 stoppage-time goals; first EPL title decided on goal difference
- May 13 Manchester City win the English Premier League for the first time
- May 13 PGA Players Championship, TPC at Sawgrass: Matt Kuchar wins by 2 strokes ahead of Ricky Fowler, Zach Johnson, Martin Laird and Ben Curtis
- May 19 137th Preakness: Mario Gutierrez aboard Ill Have Another wins in 1:55.94
UEFA Champions League Final
May 19 UEFA Champions League Final, Munich: Chelsea beats Bayern Munich, 4-3 on penalties after a 1–1 draw at the end of extra time; Blues' first title
- May 22 NHL Western Conference Finals: Los Angeles Kings beat Phoenix Coyotes, 4 games to 1
- May 25 NHL Eastern Conference Finals: New Jersey Devils beat New York Rangers, 4 games to 2
- May 27 Indianapolis 500: Dual champion (2007, 10) Dario Franchitti of Scotland wins his record tying 3rd title; teammate Scott Dixon finishes second, sweeping a 1-2 finish for Chip Ganassi Racing
- May 27 IPL Cricket Final, M. A. Chidambaram Stadium, Chennai: Kolkata Knight Riders beat Chennai Super Kings by 5 wickets; Manvinder Bisla top scores, 89 (48)
- May 27 Senior PGA Championship, The GC at Harbor Shores: Englishman Roger Chapman wins first of 2 Champions Tour major titles of the year by 2 strokes from John Cook
- May 30 Vishwanathan Anand wins his fifth World Chess Championship
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions