Johnstown may refer to:

Places Australia Johnstown, Queensland, a locality split between the Southern Burnett Region and the Gympie Region, Queensland

Canada Johnstown, Nova Scotia Johnstown, Ontario, United Counties of Leeds and Grenville Johnstown, Hastings County, Ontario Johnstown District, Upper Canada

Ireland Johnstown Castle, a Gothic Revival castle in County Wexford Johnstown, Dublin, a suburb Johnstown, Kilcumny, a townland in Kilcumny civil parish, County Westmeath Johnstown, County Kildare, a village Johnstown, County Kilkenny, a small town Johnstown, Killulagh, a townland in Killulagh civil parish, County Westmeath Monroe or Johnstown (Nugent), a townland in County Westmeath Johnstown, Templeoran, a townland in the barony of Moygoish, County Westmeath Johnstown, Killodiernan, a townland in North Tipperary Johnstown, Navan, a townland near Navan, County Meath

Northern Ireland Johnstown, County Armagh, a townland in Mullaghbrack civil parish, barony of Fews Lower, County Armagh

United States Johnstown, Colorado Johnstown, Illinois Johnstown, Indiana Johnstown, Kansas Johnstown, Maryland Johnstown, Missouri Johnstown, Nebraska, a village in Brown County Johnstown, New York Johnstown (town), New York Johnstown, North Dakota Johnstown, Ohio Johnstown, Pennsylvania, a city in Cambria County, Pennsylvania Johnstown station Johnstown, West Virginia Johnstown, Wisconsin (disambiguation) Johnstown, Wyoming Johnstown Township, Michigan Johnstown Township, Grand Forks County, North Dakota, Grand Forks County, North Dakota

Wales Johnstown, Wrexham Johnstown, Carmarthenshire

Other uses Johnstown (crater), a crater on Mars Johnstown (horse), an American Hall of Fame racehorse Johnstown (meteorite), a 1924 meteorite which fell in Colorado, United States Johnstown, a name briefly given to the Apollo program tracking/commutations ship Redstone Johnstown, a 1999 album by Canadian musician Oh Susanna

See also Johnstown Flood (disambiguation) Jonestown (disambiguation) Johnsontown (disambiguation) Johnston (disambiguation) Johnstone, a town in Renfrewshire, Scotland, known as Johnstoun in Scots Johntown (disambiguation) Saint Johnstown (disambiguation)