Majerus is a surname. Notable people with the surname include:
Christine Majerus (born 1987), Luxembourgian cyclist
Jean Majerus (1914–1983), Luxembourgian cyclist
Marianne Majerus (born 1956), Luxembourgian photographer
Michael Majerus (1954–2009), English geneticist and entomologist
Michel Majerus (1967–2002), Luxembourgian artist
Rick Majerus (1948–2012), American basketball player and coach