Lewis Allaire Scott (February 11, 1759 – March 17, 1798) was an American politician.
Scott was the son of John Morin Scott and Helena Rutgers Scott. On January 18, 1785, he married Julianna Sitgreaves, sister of Samuel Sitgreaves, and their son was Mayor of Philadelphia John Morin Scott (1789–1858).
Scott served as the Secretary of State of New York from 1784 until his death in office.
He died on March 17, 1798, and was interred at Trinity Church in Manhattan.