McGroarty is a surname. Notable people with the surname include:
Chris McGroarty (born 1981), Scottish footballer Jimmy McGroarty (born 1957), Northern Irish footballer John S. McGroarty (1862–1944), American poet and politician Rutger McGroarty (born 2004), American ice hockey player Stephen Joseph McGroarty (1830–1870), Irish American soldier Tom McGroarty, American politician