Osvaldo Ronald Zambrana Enríquez[1][2] (born 7 July 1981) is a Bolivian chess player.

He was awarded the title Grandmaster by FIDE in 2007 and he is the only Bolivian to achieve so.

Zambrana Enríquez has won the Bolivian Chess Championship five times between 2002 and 2014.

[4] He won the individual silver medal on board 3 in the 2000 Chess Olympiad at Istanbul.

This biographical article relating to a Bolivian chess figure is a stub.