马斯基根县（Muskegon County, Michigan）是美国密歇根州西部的一个县，西临密歇根湖。面积3,780平方公里。根据美国2000年人口普查估计，共有人口170,200人。县治马斯基根（Muskegon）。

成立于1859年。县名来自马斯基**（来自奥吉比瓦语，意思是「沼泽中」）。

Muskegon County is a county located in the U.S. state of Michigan. As of 2014, the population was 172,344. The county seat is Muskegon.

Muskegon County comprises the Muskegon, MI Metropolitan Statistical Area, which is part of the larger Grand Rapids-Wyoming-Muskegon, MI Combined Statistical Area. The White River flows through the county to its mouth at Lake Michigan.