Gontran Hamel

Gontran Georges Henri Hamel (1883–1944) was a French phycologist.

In 1927 he earned his doctorate in natural sciences with a thesis on the red algae genera Acrochaetium and Rhodochorton. He is known for research performed in the "Laboratoire de Cryptogamie" at the Museum d'Histoire Naturelle in Paris. He reportedly died while trying to reach Paris by bicycle prior to its liberation in August 1944.

In 1924 with Pierre Allorge (1891–1944), he was co-founder of the journal Revue algologique. He was also a contributor to the exsiccatae series Algues de France.

In 1942 Frederik Borgesen named the brown algae genus Hamelella (family Chordariaceae) in his honor. Also, the red algae species Lithothamnion hamelii is one of several species that bear his name.