Monarchy, a form of government

Monarch butterfly, a type of butterfly

Monarch Airlines, a UK airline

Monarch (The Venture Bros.), a butterfly-themed villain on the animated series The Venture Bros.

Monarchy (comics), a Wildstorm comic

Kansas City Monarchs, a professional baseball team in the Negro Leagues

Monarch, a chess engine

Monarch High School (Colorado) in Louisville, Colorado

Monarch (comics), a DC Comics supervillain

Monarch flycatchers, a group of birds in the subfamily Monarchinae

Monach Islands, an uninhabited island group off the west coast of Scotland

Monarchy (TV series), a British Channel 4 television series shown on PBS in the United States

Monarch, Colorado, an unincorporated place in the United States

Monarch Pass, Colorado

Mercury Monarch, a midsize American sedan built from 1975 to 1980

Monarch Ski Area, in Chaffee County, Colorado

Monarch (Lay Your Jewelled Head Down), the first album of the Canadian singer Feist

The Monarch Beverage Company, a drink bottler based in Atlanta, Georgia

Monarchs, a series of cards in the Yu-Gi-Oh! Trading Card Game

"Monarchs", the nicknames for the athletic teams from Old Dominion University in Norfolk, Virginia and the Sacramento, California-based WNBA Sacramento Monarchs