1613) was a Dutch mariner best known for his involvement with Willem Barentsz in finding a route to the East, avoiding the Spanish and the Portuguese fleets in the South.
In May 1596, Rijp was named captain of the second of two ships commissioned to Barents by Dutch merchants to discover the fabled Northeast Passage to the East Indies.
Barents decided to turn east and round the northern tip of Novaya Zemlya, as he had successfully managed once before.
Rijp insisted that the northern tip of Novaya Zemlya was far too dangerous and returned to the Netherlands.
Barents perished at sea in one of the two small tenders the crew used to escape to the Kola Peninsula, unlike Rijp, who correctly assessed the risks of the Arctic and returned to pick up the remainder of Barents' crew—including van Heemskerk—near Murmansk on his next trip in 1597.