Killebrew is a surname. Notable people with the surname include:
Flavius C. Killebrew, President of Texas A&M University–Corpus Christi
Gwendolyn Killebrew, American contralto
Harmon Killebrew (1936–2011), American baseball player
Joseph Buckner Killebrew (1831–1906), American farmer
Miles Killebrew, American football player
Robert Killebrew (born 1984), American and Canadian football linebacker