Howard Hollis "Bo" Callaway (born April 2, 1927) is a politician from the state of Georgia.

Callaway was born in LaGrange, Georgia. He attended Georgia Tech and graduated from the United States Military Academy. After his term in the Army ended, Callaway returned to Georgia to help his father run their business.

Like most Southerners of his time, Callaway grew up as a supporter of the Democratic Party. In 1964, however, he ran as "Goldwater Republican" for a seat in the House of Representatives. He won, becoming the first Republican elected to the U.S. House from Georgia since the Reconstruction era. Callaway ran for governor of Georgia in 1966 and he won a plurality over segregationist Democrat Lester Maddox in the general election, but a write-in effort in support of Ellis Arnall denied Callaway a majority of votes. Under Georgia's election law then in effect, the state legislature was required to select a governor from the two candidates with the most votes. Dominated overwhelmingly by Democrats, the legislature selected Maddox.

Callaway moved to Colorado in the 1970s. He served as Secretary of the Army from 1973 to 1975 and as Gerald Ford's campaign manager. Callaway was an unsuccessful candidate for the Republican nomination for the U.S. Senate in 1980. Callaway then served as the chairman of the Colorado Republican party and as head of GOPAC.