Călugăreanu is a Romanian surname that may refer to:
Cornel Călugăreanu (1930–2011), Romanian basketball player Dimitrie Călugăreanu (1868–1937), Romanian physician, naturalist and physiologist Gheorghe Călugăreanu (1902–1976), Romanian mathematician, son of Dimitrie Călugăreanu Vitalie Călugăreanu (born 1977), Moldovan journalist