Alma Marina is a full-service marina located at mile marker 754 on the Mississippi River in Alma, Wisconsin, just above Lock and Dam #4, offering transient slips with water and electricity (30-50 amp convertible power), fuel, mechanical services, and a ship store.

The facility can accommodate boats up to 60 feet in length and provides public beach access, picnic areas, and recreational courts nearby.

A public boat launch is available for day-use access to Pool #4, the largest pool on the Upper Mississippi River between locks.