Juan Manuel Peña Montaño (born 17 January 1973) is a Bolivian retired footballer who played as a central defender.
The vast majority of his professional career was spent in Spain, where he played a total of 14 years for three teams (mainly Valladolid), appearing in a total of 305 La Liga games.
Peña played more than 80 times with Bolivia, representing the nation at the 1994 World Cup and five Copa América tournaments.