Garrett is a borough in Somerset County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania, Metropolitan Statistical Area. The population was 416 at the 2020 census.

John Work Garrett was an American merchant turned banker who became president of the Baltimore and Ohio Railroad (B&O) in 1858 and led the railroad for nearly three decades. The B&O became one of the most important American railroads by the time Garrett died, and Garret would also become a noted philanthropist. He provided crucial support for the Union cause during the Civil War, expanded the railroad to reach Chicago, Illinois, and competed with the Pennsylvania Railroad for access to New York City.