John Jacob Rhodes Jr. was an American lawyer and politician. A member of the Republican Party, Rhodes served as a U.S. Representative from Arizona for thirty years. He was the minority leader in the House of Representatives from 1973 to 1981 and pressed a conservative agenda.

Since Arizona became a U.S. state in 1912, it has sent congressional delegations to the United States Senate and United States House of Representatives. Each state elects two senators to serve for six years, and members of the House to two-year terms. Before becoming a state, the Arizona Territory elected a non-voting delegate at-large to Congress from 1864 to 1912.