The Maryland Theater was a music venue in Baltimore, Maryland, home to that city's first jazz band, led by John Ridgely. It was originally built by James L. Kernan, as a vaudeville house, in 1903, and included a rathskeller in the basement. Kernan also owned a large hotel, in the same building as the theater, which was one of the fanciest hotels in the city at the time. He was also park commissioner and member of the Jail Board.