Greenawalt is a surname. Notable people with the surname include:
Abraham Greenawalt (1834–1922), Union Army soldier R. Kent Greenawalt (1936–2023), American civil rights lawyer and academic Randy Greenawalt (1949–1997), American serial killer executed in Arizona Roger Greenawalt (born 1960), American musician
See also Greenawalt Building, a building in Harrisburg, Pennsylvania, United States