Arminius (18/17 BC – 19 AD) was a Germanic Cherusci chieftain.
Arminius may also refer to:
Arminius (name), including a list of people with the name Arminius (Bruch), an 1877 oratorio by Max Bruch SMS Arminius, an ironclad warship of the Prussian Navy, 1865–1901 Jacobus Arminius (1560–1609), Dutch Reformed theologian upon whose ideas Arminianism was built; a contrast to Calvinism. Arminius (journal) associated with the Conservative Revolution in the 1920s
Other Arminius is a line of revolvers manufactured by Weihrauch of Germany.
See also Arminius Hotel, a historic hotel in Portland, Oregon, United States