MJR Theatres began in the early 1980s with the acquisition of the Main Art Theatre in Royal Oak, Michigan. In 1990, they would purchase a drive-in in Monroe and a theater in Waterford, Michigan. In June 1990, the MJR Adrian Cinema 6 opened in Adrian, MI. It became the MJR Adrian Cinema 10 in 1997. The chain took its name from its original slogan, "Movies Just Right." MJR's current slogan is "It's More Fun at MJR," as heard on its advertising jingle which appears in the chain's policy trailer.
During the 1990s, MJR would begin building more Multiplex cinemas, including one 11-(now 16-)screen theater in Waterford which replaced the Waterford Twin and Summit Place 3 Cinema (which MJR owned in the late-1990s) in 1998 and a 16-screen theater in Chesterfield Township, Michigan. In order to help finance the new cinemas, MJR sold some of its existing theaters, including the Main Art Theatre in Royal Oak, the Livonia Mall Cinemas and the drive-in in Monroe. Luna Enterprises purchased an interest in the chain at this time. The Southgate 20 was the chain's first megaplex, followed by the Brighton 20, which had opened with 16 screens, and the Marketplace 20 in Sterling Heights, Michigan.
In December 2013, MJR announced its first Studio Bar and Lounge, to be built adjacent to the lobby at its Marketplace location in Sterling Heights. As of 2019, the MJR Studio Bar and Lounge is now featured in all of the 10 locations.
The 16-screen Troy Grand Digital Cinema 16 opened on June 20, 2014. This was also around the time that MJR created its first PLF (Premium Large-Screen Format) titled the EPIC Experience. The EPIC Experience at the Troy location features one of the largest Cinema screens in Michigan, measuring 43' tall and 80' wide. The EPIC Experience also includes 4K projection and Dolby Atmos.
The 16-screen Univeral Grand Digital Cinema 16 opened on April 7, 2017. This site was formerly known as the Cinemark Warren Movies 16, and is located at 12 Mile & Dequindre in Warren, MI.