Augustus Carpenter Baldwin (December 24, 1817–January 21, 1903) was a politician from the U.S. state of Michigan.

Baldwin was born in Salina (now Syracuse, New York) and attended the public schools. He moved to Oakland County, Michigan, in 1837 and taught school. He studied law, was admitted to the bar in 1842 and commenced practice in Milford. He was a member of the Michigan State House of Representatives 1844-1846, serving as speaker pro tempore in 1846. He moved to Pontiac in March 1849 and was prosecuting attorney for Oakland County in 1853 and 1854. He was a delegate to the Democratic National Conventions at Charleston and Baltimore in 1860.

Baldwin was elected as a Union Democrat to United States House of Representatives for the Thirty-eighth Congress , serving from March 4, 1863 to March 3, 1865. He was unsuccessfully contested the election of Rowland E. Trowbridge to the Thirty-ninth Congress . He was a delegate to the peace convention at Philadelphia in 1866.

He was a member of the Pontiac School Board 1868-1886, mayor of Pontiac in 1874, judge of the sixth judicial circuit court of Michigan from 1875 until April 15, 1880, when he resigned and resumed the practice of law. He was a member of the board of trustees of the Eastern Michigan Asylum.

Baldwin died in Pontiac and is interred in Oak Hill Cemetery there.