Michael Jay Hartman (born February 7, 1967) is an American former professional ice hockey player who played in 397 games in the National Hockey League (NHL) for 13 seasons the Buffalo Sabres, Winnipeg Jets, Tampa Bay Lightning, and New York Rangers.

The 1989–90 season proved to be Hartman's best statistically, as he scored a career-high 11 goals and 10 assists and led the Sabres in penalty minutes for the second straight year with 211.

The Sabres traded Hartman, forward Darrin Shannon and defenceman Dean Kennedy to the Jets in exchange for forward Dave McLlwain, defenceman Gord Donnelly and the Jets' fifth round pick in the 1992 NHL Entry Draft (Yuri Khmylev).

Hartman accounted for eight points and 264 penalty minutes in his only year with the Jets, who left him unprotected in the expansion draft that followed the season.

For his NHL career, Hartman scored 43 goals, added 35 assists and had 1388 penalty minutes in 397 regular season contests.

That season, Hartman also played three games for USA Hockey's qualifying squad which won a berth in the World Championships.