Dumontia is a genus of red algae belonging to the family Dumontiaceae.

[1] The species of this genus are found in Eurasia, Northern America and Australia.

[1] The genus name of Dumontia is in honour of Charles Dumont de Sainte-Croix (1758 – 1830), was a French zoologist.

[2] The genus was circumscribed by Jean Vincent Félix Lamouroux in Ann.

Mus.