Sports History
May 12 Russian Mikhail Botvinnik wins world chess championship for 3rd time
Monaco Grand Prix
May 14 Stirling Moss wins the 1961 Monaco Grand Prix
- May 20 86th Preakness: Johnny Sellers aboard Carry Back wins in 1:57.6
- May 27 60th Women's French Championships: Ann Haydon beats Yola Ramirez (6-2, 6-1)
- May 27 Fiorentina of Italy win 1st European Cup Winner's Cup against Glasgow Rangers 4-2 in Florence (2nd leg)
- May 27 French Championships Men's Tennis : Manuel Santana beats Nicola Pietrangeli (4-6, 6-1, 3-6, 6-0, 6-2)
Sports History
May 27 Ralph Boston of US, sets then long jump record at 27' ½"
Indy 500
May 30 50th Indianapolis 500: A. J. Foyt takes lead with 3 laps to go to win his first of 4 Indy 500 victories by a margin of 8.28 seconds from Eddie Sachs
- May 31 European Cup Final, Wankdorf Stadium, Bern: Benfica beats Barcelona 3-2; first Portuguese team to reach final and win the tournament