Year 1945 (MCMXLV) was a common year starting on Monday (link will display the full calendar) of the Gregorian calendar.

The curse of the Billy Goat was supposedly placed on the Chicago Cubs in 1945 when Billy Goat Tavern owner Billy Sianis was asked to leave a World Series game against the Detroit Tigers at the Cubs' home ground of Wrigley Field because his pet goat's odor was bothering other fans. He was outraged and declared, "Them Cubs, they aren't gonna win no more," which has been interpreted to mean that there would never be another World Series game won at Wrigley Field.

Das Jahr 1945 markiert das Ende des Zweiten Weltkrieges und damit den Beginn der Nachkriegszeit.

1945 (MCMXLV) var ett normalår som började en måndag i den gregorianska kalendern.

1945（千九百四十五、せんきゅうひゃくよんじゅうご）は自然数、また整数において、1944 の次で 1946 の前の数である。