Harvey Gilman Whitlock (1809–1874) was an early member of the Latter Day Saint movement and one of the witnesses to the Book of Commandments. He was among those Latter Day Saints driven by mobs from Jackson County, Missouri, in the summer of 1833. From 1835 he was in and out of multiple Latter Day Saint groups several times. In 1835, Whitlock was excommunicated. In November 1835, he sent a letter expressing repentance to Smith and Smith directed Whitlock to come to Kirtland, Ohio. In January 1836, Whitlock was rebaptized at Kirtland and restored to his priesthood.