Michael S. Purzycki (born 1945) is an American businessman and politician who served as the 56th mayor of Wilmington, Delaware, from 2017 to 2025.

He previously served as the executive director of the Riverfront Development Corporation and briefly played in the National Football League for the New York Giants in the 1967–1968 season.

He spent nine years as chairman of the council's Finance Committee and wrote the legislation that would become Delaware's first ethics law.

He turned $350 million in public funding into a $1 billion private investment and brought over 1,400 residents and 6,000 employees to the Riverfront.

On September 13, 2016, he won the Democratic primary with 23.6% of the vote, defeating incumbent Mayor Dennis P. Williams and six other candidates.

[3] Purzycki won the general election on November 8, 2016 with 82% of the vote, defeating Republican real estate professional Robert Martin and Independent Democrat teacher Steven Washington.