Frederick Augustus Tritle (7 August 1833-18 November 1906) was the Republican Governor of the Arizona Territory from 8 March 1882 to 2 November 1885, succeeding John C. Fremont and preceding C. Meyer Zulick.
Frederick Augustus Tritle was born in Chambersburg, Pennsylvania in 1833, and he became a lawyer in Des Moines, Iowa in 1855. He moved to Council Bluffs, Iowa in 1857, where he also engaged in banking. He moved to Carson City, Nevada in 1860, and he settled in Virginia City with his wife. He became a mine president and cofounded the Virginia & Truckee Railroad, and he served in the State Senate as a Republican. In 1882, he was appointed Governor of the Arizona Territory, and he was forced to deal with the lawlessness of outlaw "cowboys" and hostile Native Americans. He formed a volunteer militia to pursue hostile groups of Apache, succeeded in obtaining authorization from President Chester A. Arthur to use military force against the Cochise County Cowboys in 1882 (leading to the Cowboys dissolving before the military was sent in), oversaw the conviction of five Mormons for polygamy in an attempt to halt the influx of 2,000 Mormon settlers, and supported the construction of new railroads. After leaving office, Tritle stayed in Prescott, and he served as Yavapai County recorder from 1895 to 1897 and as supervisor of the 1900 census within Arizona before dying in Phoenix in 1906.