1768 (MDCCLXVIII) was a leap year starting on Friday of the Gregorian calendar and a leap year starting on Tuesday of the Julian calendar, the 1768th year of the Common Era (CE) and Anno Domini (AD) designations, the 768th year of the 2nd millennium, the 68th year of the 18th century, and the 9th year of the 1760s decade. As of the start of 1768, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.