Glenn L. Martin Maryland Aviation Museum, Aviation museum in Middle River, US.

The Glenn L. Martin Maryland Aviation Museum is an aviation museum in Middle River that features aircraft and documents the aviation industry's development. Its layout combines outdoor displays with indoor galleries that trace how the sector grew and changed over time.

The museum was founded in 1990, and two RB-57s acquired from Aberdeen Proving Ground were airlifted to the site on 28 May 1992 after fog postponed the first attempt. It opened at Martin State Airport on 11 June 1993. A Martin 404 flew in on 27 May 2000, and by 2003 rising attendance prompted a renaming to reflect a broader focus.

The museum displays aircraft and artifacts that show how aviation shaped the region and the people who lived here. Visitors can experience how this industry was woven into everyday life and local identity.

Visitors can explore the museum through guided tours and access the research library by appointment. The location at Martin State Airport makes it convenient for those interested in combining their visit with viewing active aircraft operations.

Two Martin AM Mauler aircraft are stored at the museum awaiting restoration; the Mauler was a single-seat attack aircraft, not a bomber. The collection also holds the aft fuselage and tail of a Martin P6M SeaMaster, a jet flying boat. Most of the archive came from Martin-Marietta around 1992, saved shortly before it was to be thrown out.