Edgar C. Gadbois (born c.1936) is an American politician who served as the 33rd mayor of Marlborough, Massachusetts.
He faced William I. Randall in the Middlesex and Worcester Senate district Republican primary.
[3] Gadbois lost the election to businessman Frank Walker.
[3] Following his tenure as mayor, Gadbois served as the town administrator of Wareham, Massachusetts from 1975 to 1978 and municipal manager of Northfield, Vermont.
His brother, David P. Gadbois, was Marlborough's city solicitor.