Robert Aldridge (born 1954 in Richmond, Virginia) is an American composer, professor, and current Professor and Director of Music at the Mason Gross School of the Arts at Rutgers University. He has written over sixty works for orchestra, opera, musical theater, dance, and various chamber ensembles that have been performed in the United States, Europe, and Japan. He is widely known for his opera Elmer Gantry, based on Sinclair Lewis's 1927 novel of the same name, which was completed in 2007 and won Best Engineered Album (Classical) and Best Contemporary Classical Composition in the 54th Annual Grammy Awards.