| 27/4/2021 | 27-year-old Greek windsurfing champion Byron Kokkalanis wins the bronze medal at the World RS:X Championship which takes place in Cadiz, Spain |
| 27/4/2009 | Minas Vourdoubanis, race driver during the period 1955-75 with 17 participations in the Acropolis Rally and 13 in Monte Carlo (finished in 3) driving Skoda and Glas, dies at the age of 89 |
| 27/4/1999 | Miltiadis Marinakis, founder of Vanimar and father of Olympiacos president Vangelis Marinakis, dies at age of 69. In 1979, along with 10 other shipowners, he succeeded Nikos Goulandris by taking over Olympiacos, while later, he refused to sell his shares to Koskotas. |
| 27/4/1999 | NATO bombing forces Yugoslavian authorities to stop the basketball championship. Buducnost are crowned champions |
| 27/4/1999 | Agi Kassoumi ranks 3d at the World Shooting Championships in Seoul |
| 27/4/1999 | The oldest European basketball player Joan Creus of Manresa retires aged 43 |
| 27/4/1999 | The World Cycling Federation establishes anti-doping control with blood test on the first day of every race and random tests during it |
| 27/4/1981 | The first marketed integrated mouse – shipped as a part of a computer and intended for personal computer navigation – comes with the Xerox 8010 Star Information System. However, the mouse will remain relatively obscure until the appearance of the Apple Macintosh in 1984. |
| 27/4/1981 | The NASL hires the first female referee |
| 27/4/1963 | American pole vaulter Bryan Sternberg jumps over 5m. Plastic poles are first used this year. As a result the records improve spectacularly. American John Penel jumps 5.20m on August 24 |
| 27/4/1958 | ?he first post-war "Amazons’ Rally" is conducted under the auspices of ELPA, with 16 crews. M. Georgiadou - M. Delivoria with Simca will be the winners while F. Goliopoulou - E. Pothoulaki with DKW will finish second. |
| 27/4/1956 | Heavyweight world champion Rocky Marciano retires undefeated after 49 matches, 43 of which won by knock-out |
| 27/4/1938 | A yellow baseball is used for the first time in a baseball match. Columbia - Fordham in New York |
| 27/4/1908 | The 4th Olympic Games (the longest in Olympic history- 6 months) open in London. 1.999 men and 36 women from 23 countries take part. Their program bore many similarities to today's Olympics |
