Republicanism, the ideology in support of republics.

Roman Republic, as well as supporters of the Republic during the Roman Empire.

Republican Party (United States), a conservative party in the U.S.

Advocates of a republic, a form of government based on the rule of laws, not a monarchy or dictatorship.

Fianna Fáil, a centrist Irish party also known as the Republican Party.

Irish Republicanism, tied up in the Irish independence movement.

Second Spanish Republic, during the Spanish Civil War.

List of republics, a complete listing.

List of Republican Parties, a complete listing.

Republican River, a river in Colorado, Nebraska, and Kansas in the United States.

List of Republican People's Parties, a complete listing.

Advocates of the abolition of a monarchy; for example, the Australian Republican Movement and the British republican movement.

Various French Republics, most notably the First Republic established during the French Revolution.

The Republican - a newspaper published in Springfield, Massachusetts