Valdenor Pereira dos Santos (born 21 December 1969) is a Brazilian former long-distance runner. Born in São Raimundo Nonato, dos Santos started running professionally at the age of 15. He featured in four editions of the World Championships during the 1990s but never in the Olympics, coming closest in 1996 when he seemed to be in the team for Atlanta, only for a change in the qualification rules to then rule him out.