Theodore L. Gatsas (born May 22, 1950) is an American politician and member of the Republican party who had served as mayor of Manchester, New Hampshire, from 2010 to 2018.

[7] Gatsas won a huge victory over Chris Hebert in the 2011 mayoral contest, taking nearly 70% of the vote.

[9] In 2015, Gatsas faced his stiffest challenge ever, when he beat Democratic Alderwoman Joyce Craig by only 64 votes, after a recount.

[14] A year after his loss, he had to personally repay $68,000 to his campaign contributors due to finance law irregularities.

[21] The revelation of the rape and the failure to inform the public of the crime led to changes in police and school administration policy.

[25] It was found in the final days of the Gatsas administration that the City Solicitor's office had failed to successfully prosecute domestic violence cases.

[27] Police Chief Nick Willard, out of concern that victims were not being protected, and even placed in further violence, appealed directly to the Attorney General of New Hampshire for assistance.

[28] The chairman of the Board of Aldermen, Pat Long, said "As an elected official I feel a sense of responsibility".

A stand-out in the battle against opiates who had attracted national attention, Chief Willard, subsequently was named U.S.