Ronaldo Luís Nazário de Lima (born 18 September 1976), commonly known as Ronaldo, is a Brazilian business owner, president of La Liga club Real Valladolid, and a retired professional footballer who played as a striker. Popularly dubbed O Fenômeno ("The Phenomenon"), and also nicknamed R9, he is widely considered one of the greatest players of all time.

As a multi-functional striker who brought a new dimension to the position, Ronaldo has been the influence for a generation of strikers that have followed. His individual accolades include being named FIFA World Player of the Year three times, and winning two Ballon d'Or awards. Ronaldo started his career at Cruzeiro and moved to PSV in 1994.