Dollfus is French surname, originally from the Alsace region. It may refer to:
Adrien Dollfus (1858–1921), French carcinologist Audouin Dollfus (1924–2010), French astronomer and aeronaut Gustave Frédéric Dollfus (1850–1931), French geologist and malacologist Jean Dollfus (1800–1887), French industrialist Maurice Dollfus (1885–1972), French businessman, executive for Ford Motor Company of France Olivier Dollfus (1931–2005), French geographer Robert-Philippe Dollfus (1887–1976), French zoologist and parasitologist
See also 2451 Dollfus, a main-belt asteroid, named for Audouin Dollfus Dollfus' stargazer (Uranoscopus dollfusi), a venomous salt-water fish Dollfus-Mieg et Compagnie, a French textile company founded by the Dollfus family Engelbert Dollfuss (1892–1934), Austrian politician