Augustus Herman Pettibone (January 21, 1835 – November 26, 1918) was an American politician and a member of the United States House of Representatives for the 1st congressional district of Tennessee.
Pettibone was born in Bedford, Ohio, in Cuyahoga County, Ohio. He graduated from Hiram College in Ohio and then from the University of Michigan at Ann Arbor in 1859. He studied law, was admitted to the bar in 1860, and commenced practice in La Crosse, Wisconsin.
He continued the practice of law in Greeneville, Tennessee, in 1865. He served as an alderman of Greenville from 1866 to 1868. He was an attorney general for the first judicial circuit of Tennessee in 1869 and 1870. He was appointed an assistant United States district attorney for the eastern district of Tennessee on December 27, 1871, serving until 1880. He was an unsuccessful candidate for election in 1878 to the Forty-sixth Congress. He was a delegate to the Republican National Convention in 1880.
He was elected as a Republican to the Forty-seventh, Forty-eighth, and Forty-ninth Congresses. He served from March 4, 1881 to March 3, 1887, but he was not a candidate for renomination in 1886. He resumed the practice of law and served in the Tennessee House of Representatives from 1897 to 1899. He was appointed a special agent of the General Land Office and served from July 17, 1899 to January 31, 1905, when he resigned. He died in Nashville, Tennessee, and was interred in Nashville National Cemetery in Madison, Tennessee, in Davidson County, Tennessee.