Merchán is a surname. Notable people with the surname include:
Chucho Merchán (born 1952), Colombian bassist and guitarist Emilio Merchán (born 1976), Spanish sprint and marathon canoeist Jesús Merchán (born 1981), Venezuelan baseball player José María Merchán (born 1976), Spanish triathlete Juan Merchan (born 1962 or 1963), American jurist, New York State Supreme Court Robinson Merchán (born 1964), Venezuelan road racing cyclist Sebastián Merchán (born 1987), Ecuadorian racing driver