Ephraim Wilder Farley (August 29, 1817 – April 3, 1880) was a U.S. Representative from Maine.
Born in Newcastle, Maine, Farley attended the common schools and graduated from Bowdoin College, Brunswick, Maine, in 1836.
He was admitted to the bar and commenced practice in Newcastle.
He served as a member of the Maine House of Representatives in 1843 and 1851–1853.
He was an unsuccessful candidate for reelection in 1854 to the Thirty-fourth Congress.