Óscar Sánchez Fuentes is a Spanish footballer who plays for Real Murcia in the Spanish second division, usually as a left defender.

After stints with Atlético Madrid's C and B teams and second division side CD Badajoz, Sánchez joined Real Valladolid in 2002, where he was regularly used as a defensive backup. He made his La Liga debut on 28 September 2002, playing three minutes in a 1–1 home draw against Real Madrid.

Sánchez helped Valladolid achieve top flight promotion in 2006–07, participating in 21 league matches (1,247 minutes) in the following season. After seven years of relative use, he signed for hometown's Real Murcia on a free transfer, appearing in less than half of the games in his first season (19) as his team suffered second level relegation, but being first-choice in the following in an immediate promotion back.

On 22 October 2011, Sánchez scored a brace in a 3–1 home win against Villarreal CF B.