Mengel is a surname. Notable people with the surname include:
Alex Mengel (1950–1985), Guyanese-born suspected serial killer Charles Mengel (born 1933), Australian cricketer Christian Gotlob Mengel (1716–1769), Danish publisher, translator and bookseller
Ernest Mengel (1913–1968), Luxembourgian footballer Friederike Mengel (born 1979), German economist Georg Mengel (1612–1667), German composer Hans Mengel (1917–1943), German footballer Levi Walter Mengel (1868–1941), American entomologist
See also Northern Territory v Mengel, an Australian court case Mengele (disambiguation)