254th may refer to:
254th (City of London) Regiment, Royal Artillery, volunteer field artillery unit of the British Army between 1863 and 1971 254th Battalion (Quinte's Own), CEF, unit in the Canadian Expeditionary Force during the First World War 254th Combat Communications Group (254 CCG) a unit of the Texas Air National Guard located at Hensley Field, Dallas, Texas 254th Fighter Aviation Regiment, aviation regiment established in 1944 as 1st Yugoslav Fighter Regiment 254th Indian Tank Brigade, armoured brigade of the Indian Army during World War II 254 (East of England) Medical Regiment, Royal Army Medical Corps, regiment of the British Army Reserve 254th Motor Rifle Division, motorized infantry division of the Soviet Army during the Cold War and later the Ukrainian Army 254th pope or Pope Gregory XVI (1765–1846), born Bartolomeo Alberto Cappellari, became pope on 2 February 1831 254th Tunnelling Company, one of the tunnelling companies of the Royal Engineers created by the British Army during World War I Riverdale-West 254th Street station, commuter rail stop on the Metro-North Railroad's Hudson Line
See also 254 (number) 254, the year 254 (CCLIV) of the Julian calendar 254 BC