Jan Mertens

Jan Mertens may refer to:
 * Jan Mertens the Younger (died c. 1527), was a South Netherlandish painter, son of the sculptor Jan Mertens the Elder
 * Jan Mertens (Catholic People's Party) (1916–2000), Dutch politician
 * Jan Mertens (cyclist) (1904–1964), Belgian cyclist
 * Jan Mertens (footballer) (born 1995), Belgian footballer