| 12/6/2022 | Benfica forward Haris Seferovic scores the fastest goal (after just 55 seconds) in the Nations League's short history to give Switzerland a 1-0 victory over Portugal in Group A2. |
| 12/6/2022 | Greek paralympic swimmer Antonios Tsapatakis wins the gold medal in the 100-meter breaststroke race with 1:36.27 (national record) on the opening day of the 2022 World Para Swimming Championships in Madeira, Portugal. |
| 12/6/2021 | The Greek women’s team (Pinelopi Nika, Ariadni Naskari and Athina Sarra) wins the gold medal at the UIPM 2021 Pentathlon and Laser Run World Championships held in Cairo, Egypt. A few hours earlier, Pinelopi Nika had won the bronze medal with 14’40’’04. |
| 12/6/2021 | Denmark's star Christian Eriksen collapses in their Euro 2020 game against Finland. Eriksen suffers a cardiac arrest and “is gone” before being resuscitated on the pitch. The game is suspended but an hour and 45 minutes later it will be resumed. Finland will win their first game at a major finals with Joel Pohjanpalo scoring the only goal of the game. |
| 12/6/2014 | The documentary "Ta Gipeda" from ERT's series "The Stekia" directed by Nikos Triantafyllidis (son of Harry Kliment) premiers with interviews of well-known sportspeople, veteran footballers, as well as actors, writers, etc. |
| 12/6/2013 | Greek canoe kayak champion (C1) Andreas Kaligaridis dies at the age of 37. On 5/6 he fell into a coma in Pozan, Poland where he was with the national team for the 3rd World Cup. He was taken to the hospital where doctors diagnosed acute leukemia. On 11/6 his brain cells died due to necrosis and while he was pronounced clinically dead, only his heart kept him alive. |
| 12/6/2012 | Serbian coach Zeljko Obradovic leaves Panathinaikos after 13 seasons during which the team won 11 championship titles, 5 Euroleague titles and 7 Greek Cup titles. |
| 12/6/2008 | Austria’s Ivica Vastic becomes the oldest goalscorer in the history of the European Championship when he converts from the spot in injury time (Austria – Poland 1-1). At 38 years and 257 days, he is more than four years older than the previous record holder Nene (34y. & 213 d. 20/6/1984 Portugal-Romania 1-0). |
| 12/6/2004 | Greece defeats host country, Portugal, with 2-1 in the first match of the EURO 2004. Nikos Karagounis and Angelos Basinas (pen) are the scorers of the greek goals |
| 12/6/1999 | The Sydney Olympic Stadium opens with a football match (Australia - FIFA Stars) |
| 12/6/1999 | The Mediterranean Handball Union is founded in Egypt by 11 mediterranean countries (Algeria, Libya, Cyprus, Egypt, Italy, Tunis, Syria, Turkey, Yugoslavia, Morocco and Greece) |
| 12/6/1999 | Manchester United coach Alex Ferguson is knighted by Queen Elizabeth |
| 12/6/1994 | The 9th European Veterans Athletics Championships close at OAKA Stadium. 3.500 men and women competed |
| 12/6/1991 | The Chicago Bulls win their first NBA title after beating the LA Lakers 108-101. Scotty Pippen scores 32 points, John Paxson 20 and Michael Jordan (MVP) 30 |
| 12/6/1930 | German Max Schmeling becomes the first boxer who wins the heavyweight title with suspension of his opponent, when US Jack Sharkey is sent off because of a foul in the 4th round of the final held in New York |
| 12/6/1880 | First baseball perfect game by John Lee Richmond, Worchester - Cleveland 1-0 |
| 12/6/1839 | Abner Doubleday invents baseball in Cooperstown, New York |
| 12/6/1349 | King Edward III, almost half a century after King Edward II (13/4/1314), bans football again because: “Football and other recreations distract the populae from practicing archery, which is necessary for war” |
