1943 (MCMXLIII) was a common year starting on Friday of the Gregorian calendar, the 1943rd year of the Common Era (CE) and Anno Domini (AD) designations, the 943rd year of the 2nd millennium, the 43rd year of the 20th century, and the 4th year of the 1940s decade.

Below, the events of World War II have the "WWII" prefix.