Luther Franklin McKinney (April 25, 1841 – July 30, 1922) was a U.S. Representative from New Hampshire.

Luther Franklin McKinney
United States Ambassador to Colombia
In office July 17, 1893 – December 6, 1896
Appointed by	Grover Cleveland
Preceded by	John T. Abbott
Succeeded by	Charles Burdett Hart
Member of the U.S. House of Representatives from New Hampshire's 1st district
In office March 4, 1891 – March 3, 1893
Preceded by	Alonzo Nute
Succeeded by	Henry William Blair
Member of the U.S. House of Representatives from New Hampshire's 1st district
In office March 4, 1887 – March 3, 1889
Preceded by	Martin Alonzo Haynes
Succeeded by	Alonzo Nute
Personal details
Born	April 25, 1841 Newark, Ohio
Died	July 30, 1922(1922-07-30) (aged 81) Bridgton, Maine
Resting place	Forest Hill Cemetery
Political party	Democratic
Military service
Branch/service	Union Army
Years of service	August 5, 1861, - February 1863
Rank	Sergeant
Commands	Company D, 1st Ohio Cavalry Regiment
Battles/wars	Civil War

Born in Newark, Ohio, McKinney attended common and private schools. He taught school for a while. When the Civil War began, he enlisted in Company D, 1st Ohio Cavalry Regiment, serving from August 5, 1861, until February 1863, where he became a sergeant. He moved to Iowa in 1865, where he engaged in agricultural pursuits and also taught school until 1867.

He graduated from St. Lawrence University, Canton, New York, June 30, 1870, and moved to Bridgton, Maine, in 1871, where he was ordained a pastor of the Universalist Church. He moved to Newfields, New Hampshire, in 1873, and subsequently, in 1875, to Manchester, pursuing his ministerial duties in both places. He was an unsuccessful candidate for election in 1884 to the Forty-ninth Congress.

McKinney was elected as a Democrat to the Fiftieth Congress (March 4, 1887 – March 3, 1889). He was an unsuccessful candidate for reelection in 1888 to the Fifty-first Congress. He was elected to the Fifty-second Congress (March 4, 1891 – March 3, 1893), but was not a candidate for renomination in 1892, when instead he was an unsuccessful candidate for Governor of New Hampshire.

He was the United States Minister to Colombia from 1893 to 1897, then returned to Bridgton, Maine, where he engaged in the furniture business. He served as member of the State house of representatives in 1907 and 1908. He was again pastor of the Universalist Church at Bridgton, where he served until his death on July 30, 1922. He was interred in Forest Hill Cemetery.