Willem Einthoven
— Navneord
– Engelsk
~ Dutch physiologist who devised the first electrocardiograph (1860-1927)
Willem de Kooning
— Navneord
– Engelsk
~ United States painter (born in the Netherlands) who was a leading American exponent of abstract expressionism (1904-1997)
Willem de Sitter
— Navneord
– Engelsk
~ Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)