20th-century Dutch people

Jacoba Johanna (Coba) Ritsema (26 June 1876, Haarlem – 13 December 1961, Amsterdam), was a portrait painter from the Netherlands.

Johannes "Jan" Baptist Norbertus Pijnenburg (15 February 1906 – 2 December 1979) was a Dutch track cyclist who competed in the 1928 Summer Olympics. He won the silver medal as part of the Dutch pursuit team. After the Olympics he turned professional and won six-day races in Dortmund (1931, 1932), Berlin (1931), Amsterdam (1932, 1933), Brussels (1932–1934), Paris (1932, 1934), Chicago (1932), Frankfurt (1933), Stuttgart (1933), Antwerp (1934, 1937), Rotterdam (1936) and Copenhagen (1936).Honored by several people, retired in September 1940.

Josephus Maria Melchior "Jos" Hermens (born 8 January 1950 in Nijmegen, Gelderland) is a former Dutch long-distance runner. Subsequently, he also became well-known for his later career as a sports manager as the founder and CEO of Global Sports Communication, which manages many Olympian athletes.