Octavio Darío Rodríguez Peña (born 17 September 1974 in Montevideo) is a Uruguayan former footballer who played as a centre back or left back for Peñarol. He was capped 51 times for the Uruguay national team. A versatile defender, he was capable of playing "at left-back or as a left-sided central defender. Strong in the air, he [wa]s a useful distraction in the opposition box at set pieces."
With Uruguay, Rodríguez was a participant at the 2002 World Cup and scored Uruguay's first goal of the tournament, a volley that curled into the top left corner of the goal. He has worn the captain's armband for Uruguay. He also played at the 2004 and 2007 Copa América tournaments.