Errett is a given name. Notable people with the name include:
Errett Bishop (1928–1983), American mathematician known for his work on analysis Errett Callahan (1937–2019), American archaeologist, flintknapper, and pioneer in experimental archaeology and lithic replication studies Errett Lobban Cord (1894–1974), leader in United States transport during the early and middle 20th century Errett P. Scrivner (1898–1978), U.S. Representative from Kansas
See also Russell Errett (1817–1891), Republican member of the U.S. House of Representatives from Pennsylvania