| 31/5/2025 | Dimitra Kontou and Zoe Fitsiou finish in second place in the double sculls competition with a time of 06:49.11 winning the silver medal at the European Rowing Championships in Plovdiv, Bulgaria. |
| 31/5/2025 | Luis Enrique's Paris Saint Germain defeats Simone Inzaghi's Inter 5-0 (Hakimi 12', Doue 20' & 63', Kvaratskhelia 73', Mayulu 86') in the Champions League final in Munich, winning the trophy for the first time in their history and recording the biggest victory in a Champions League final |
| 31/5/2020 | Following the death of George Floyd on 25/5/2020, Euroleague releases an antiracist video message titled “not in my house” with the participation of Nick Calathes and Zeljko Obradovic |
| 31/5/2009 | Panathinaikos defeats Olympiacos with 94-81 at the 4th play-off final and wins the 11th greek basketball championship in 12 years. 35-year-old Fragiskos Alvertis ends his basketball career participating for the 19th year (1990-2009) with the team reaching 24 titles (11 Greek Championships, 7 Greek Cups, 5 Euroleague titles and 1 Intercontinental title). |
| 31/5/2008 | 21-year-old Jamaican Usain Bolt sets the 100m world record at 9.72 at the Reebok Grand Prix in New York, lowering the 9.74 set by compatriot Asafa Powell at Rieti, Italy, last September |
| 31/5/1999 | Tony Stewart becomes the first driver to run two races in one single day (NASCAR and Indianapolis 500) |
| 31/5/1998 | Greece U21 rank 2nd after losing to Spain 1-0 in the final of European Football Championship |
| 31/5/1995 | Aris Vovos with his co-driver Kostas Stefanis win the 42nd Acropolis Rallye with a Lancia Delta HF Integrale. It is the first time in the last 40 years that a Greek crew wins the Acropolis Rallye after Johnny Pesmatzoglou in 1955 with an Opel Kapitan |
| 31/5/1983 | Jack Dempsey, former world heavyweight champion dies |
| 31/5/1981 | PAOK coach Gioula Lorand suffers a heart attack at the 15th minute of the football match against Olympiacos. PAOK players, who will learn about his death at half time, will score at the second half and win with 1-0 |
| 31/5/1975 | Legendary UCLA coach Joe Wooden quits after the victory over Kentucky. It is the 10th NCAA title for UCLA |
| 31/5/1965 | British Jim Clark becomes the first non American to win the Indianapolis 500 |
| 31/5/1933 | Earl of Derbie's ''Yperion'' (J. Weston, jockey) wins the fastest Epsom Derby- at 35m/h. The Derby races were first held in 1780 |
| 31/5/1927 | After almost 20 years and 15.007.003 vehicles, the last Ford Model T rolls off the assembly line. The car, known as Tin Lizzie and Flivver appeared for the first time in September 27, 1908 |
| 31/5/1903 | VfB Leipzig beat DFC Prague by 7-2 in Hamburg and becomes the first german football champion in history. All players are amateurs who train and play in their spare time |
| 31/5/1868 | British James Moore wins the first recorded 2klm bicycle race at Parque de St Cloud |
