Adam Ant, a New Romantic singer of the 1980s.

Adam Adamant Lives!, a BBC television series in the 1960s.

Adamantium (comics), a fictional metal in the Marvel comics universe.

For the village of Adamant in the state of Vermont, USA, see Calais, Vermont.

Atom Ant, a Hannah Barberra cartoon character.

Adamant, an iron barque (sailing ship) that brought immigrants to New Zealand in the late 19th century.

Adamant is a poetic term used to refer to any especially hard substance. It may also refer to:

Adamantane, a bulky hydrocarbon.

Adamantium (band), a metalcore band.

Adamantine, a mineral.

HMS Adamant, several ships of the Royal Navy.

Adamantine (veneer), a veneer developed by The Celluloid Manufacturing Company of New York City.