Neil Michael O'Leary (born October 10, 1958) is an American politician and retired police chief who served as the 46th mayor of the City of Waterbury, Connecticut until 2023.

In the summer of 2009, O'Leary left his position in Waterbury to become the chief of police of Wolcott, Connecticut.

Employing a similar approach to blighted housing, O'Leary helped neighborhoods develop a comprehensive anti-blight program with reciprocal chores and responsibilities.

He is collaborating with state and federal governments to reclaim abandoned industrial lands along the City's river-rail spine, the site of an alternate transportation riverfront greenway.

[7] On November 5, 2013, O'Leary was re-elected for a second term, defeating board of education commissioner Jason Van Stone and perennial Independent Party candidate Larry DePillo.