Robert McKnight
Member of the U.S. House of Representatives from Pennsylvania's 22nd district
In office 1859–1863
Preceded by	Samuel A. Purviance
Succeeded by	James K. Moorhead
Member of the Pittsburgh City Council
In office 1847–1849
Personal details
Born	January 20, 1820 Pittsburgh, Pennsylvania, U.S.
Died	October 25, 1885 (aged 65) Pittsburgh, Pennsylvania, U.S.
Resting place	Allegheny Cemetery
Political party	Republican
Children	Denny McKnight
Education	Princeton College (BA)

Robert McKnight (January 20, 1820 – October 25, 1885) was an American lawyer and politician who represented Pennsylvania's 22nd congressional district in the United States House of Representatives from 1859 to 1863.

Robert McKnight was born in Pittsburgh, Pennsylvania. He attended the common schools and a private school at Xenia, Ohio. He graduated from Princeton College in 1839.^[1]

McKnight studied law, was admitted to the bar in 1842, and joined a law partnership with Henry S. Magraw in Pittsburgh. In 1846, he was hired to be a solicitor for the Bank of Pittsburgh.^[2]

MnKnight served as a member of the Pittsburgh City Council from 1847 to 1849, and was subsequently elected as a Republican to the Thirty-sixth and Thirty-seventh Congresses. He served his district during the American Civil War.

After his final term in 1863, he resumed the practice of law.

McKnight died in Pittsburgh in 1885. He was interred at the Allegheny Cemetery.^[3] Early Pittsburgh Pirates owner Denny McKnight was his son.

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  Robert McKnight, in later years

• Robert McKnight at Find a Grave