Joseph C. Sullivan (born March 14, 1959) is an American former politician who served as the first mayor of Braintree, Massachusetts.

In June 2011, Sullivan announced that he was seeking re-election for a second term as Mayor of Braintree.

[1] On November 8, 2011, Sullivan was re-elected for a second term as mayor of Braintree, Massachusetts after defeating his opponent Paul Walsh.

He ran unopposed in the November 2015 Braintree town election for Mayor.

His last day as Mayor was on January 2, 2020 when he was succeeded by Braintree Town Councilor Charles C. Kokoros.