Maag is a surname. Notable persons with that name include:
Bruno Maag (born 1962), Swiss type designer Dan Maag (born 1975), German film producer Karin Maag (born 1962), German politician Natalie Maag (born 1997), Swiss luger Peter Maag (1919–2001), Swiss conductor Ron Maag (born 1945), American politician
See also AnnaSofia Mååg (born 1968), Swedish ice artist Dr. R. Maag, a Swiss chemical company MAAG