1312 (MCCCXII) was a leap year starting on Saturday of the Julian calendar, the 1312th year of the Common Era (CE) and Anno Domini (AD) designations, the 312th year of the 2nd millennium, the 12th year of the 14th century, and the 3rd year of the 1310s decade. As of the start of 1312, the Gregorian calendar was 8 days ahead of the Julian calendar, which was the dominant calendar of the time.

• November 13 – Edward III of England