Kirtland is a city in Lake County, Ohio, United States. The population was 6,937 at the 2020 census. Kirtland is known for being the early headquarters of the Latter Day Saint movement from 1831 to 1837 and the site of the movement's first temple, the Kirtland Temple, completed in 1836. The Kirtland Temple and nearby Historic Kirtland Village are maintained as historic sites highlighting that era.