Rangaswamy is a surname. Notable people with the surname include:
Rangaswamy Nataraja Mudaliar (1885–1972), Indian film director Rangaswamy Narasimhan (1926–2007), Indian computer and cognitive scientist Adithiya Rangaswamy (born 1994), Botswana cricketer Hotte Paksha Rangaswamy (1933–2007), political leader from the Indian state of Karnataka Jeevarathinam Rangaswamy (born 1921), a leader of Indian National Congress from Tamil Nadu M. Rangaswamy, Indian politician and was elected member for the Tamil Nadu Legislative Assembly N. Rangaswamy (born 1950), Indian politician, Chief Minister of the Union Territory of Puducherry Ponnuswamy Rangaswamy (born 1964), Indian weightlifter Shantha Rangaswamy, (born 1954), Indian cricketer Manchanahalli Rangaswamy Satyanarayana Rao (born 1948), Indian scientist from Mysore, India Rangaswamy Srinivasan (born 1929), physical chemist and inventor with a 30-year career at IBM Research
See also Bilikal Rangaswamy Betta, hill near Kanakapura town in the Indian state of Karnataka Rangaswamy Peak and Pillar, rocky column in Kotagiri, The Nilgiris, Tamil Nadu K.S. Rangaswamy College of Technology, engineering college affiliated to Anna University, Chennai, Tamil Nadu, south India