Willem Cornelisz. van Muyden (1573, in Muiden – 1634, in Amsterdam) was an early 17th-century skipper. He is known in the Netherlands as De Eerste Walvisvanger ("The First Whaleman") (1613). Van Muydenbukta and Van Mijenfjorden on the west coast of Spitsbergen and Kapp Muyen on the west coast of Jan Mayen are named after him.