Walter Nahún López Cárdenas (born 1 September 1977) is a retired Honduran football player.
His first game in the Honduran league was on 16 November 1997 wearing the Platense's shirt in La Ceiba against Vida. With Darwin Pacheco, he has been the only Honduran national league footballer from Ocotepeque Department.
He finished his career with Cobán Imperial in the Guatemala's top division.
López made his debut for Honduras in a May 2000 friendly match against Canada and has earned a total of 13 caps, scoring 1 goal. He has represented his country in 1 FIFA World Cup qualification match and played at the 2005 UNCAF Nations Cup as well as at the 2000 Summer Olympics.
His final international was a June 2005 friendly match against Jamaica.
- Scores and results list Honduras' goal tally first.