Diego Ribera Ramírez (born 19 February 1977) is a Spanish retired (in Ribarroja CF) footballer who played as a forward, and is the current assistant manager of Real Valladolid.

Born in Riba-roja de Túria, Valencian Community, Ribera emerged through local Valencia CF's youth ranks.

On 13 February 1994, six days shy of his 17th birthday, he made his La Liga debut, playing nearly 40 minutes in a 0–1 away loss against CD Tenerife and being one of the youngest players ever to first appear in the competition.

For the 1996–97 season, definitely released by the Che, Ribera joined UE Figueres in Segunda División B, being top scorer in Group III.

Subsequently, he returned to the top division with RCD Espanyol but, as in his previous spell, spent most of the campaign with the reserves, only appearing once in that level and also being loaned, now to Recreativo de Huelva.