Ernest Marie Louis Bedel (16 May 1849, Nantes – 26 January 1922, Paris) was a French entomologist who specialised in Coleoptera.
Louis Bedel studied first in Nantes then in Paris where the future entomologist Maurice Sédillot (1849-1933) was a fellow student.
His father arranged his taking part in natural history sorties where he met great names of natural history like Alcide d'Orbigny (1802-1857) and which were also attended by future scientists in other disciplines like Henry Le Chatelier (1850-1936), Henri d'Orbigny (1845-1915) and Pierre Emile Gounelle (1850-1914).
He took part in the war of 1870 before continuing his law studies.
His collection is preserved at the Muséum national d'Histoire naturelle.