Marvyn, also spelled Marvin, is an unincorporated community southerly located in Lee County, Alabama, United States. It sits at the crossroads of Alabama Highway 51 and U.S. Highway 80, and in the Lee County "panhandle" between Russell County and Macon County. It is part of the Columbus, Georgia-Alabama Metropolitan Area.
Marvyn was originally located in Russell County, but was granted to Lee County in 1923 in exchange for Phenix City. A soil series is named after Marvyn, as it was first described in the area. The Marvyn soil series is described as a "fine-loamy, siliceous, thermic Typic Hapludults.