Duncan E. McKinlay

Duncan E. McKinlay (October 6, 1862 – December 30, 1914) was a U.S. Representative from California.

Born in Orillia, Ontario, Canada, McKinlay attended the common schools. Later learned the trade of carriage painting and worked in Flint, Michigan, and San Francisco, Sacramento, and Santa Rosa, California. He studied law. He was admitted to the bar by the supreme court of California in 1892 and commenced practice in Santa Rosa, California. Second assistant United States attorney at San Francisco 1901–1904. First assistant United States attorney 1904–1907.

McKinlay was elected as a Republican to the Fifty-ninth, Sixtieth, and Sixty-first Congresses (March 4, 1905 – March 3, 1911). He was an unsuccessful candidate for reelection in 1910 to the Sixty-second Congress. He was appointed by President Taft as United States surveyor of customs for the port of San Francisco, California, in 1910. He died in Berkeley, California, December 30, 1914. He was interred in Sunset Cemetery.