|Full name||Diego Mariño Villar|
|Date of birth||9 May 1990|
|Place of birth||Vigo, Spain|
|Height||1.85 m (6 ft 1 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 00:00, 11 March 2014 (UTC).
† Appearances (Goals).
Born in Vigo, Galicia, Mariño played for Villarreal CF since the age of 14, having already represented four teams as a youth. He made his professional debuts in the 2010–11 season, helping the reserves barely avoid relegation from the second division while appearing in 38 games.
In the following campaign Mariño was again first-choice, but as the main squad suffered relegation in La Liga, the B's were forced to drop down to the third level even though the team finished in a comfortable 12th position. After the departures of longtime incumbent Diego López and 41-year-old César (the latter retired), he was promoted to the first team by manager Julio Velázquez – also his boss in the second side.
On 5 July 2013 Mariño signed a five-year contract with Real Valladolid, with Villarreal retaining an option to buy him back for €300,000. He made his debut in the top flight on 17 August, in a 1–2 home loss against Athletic Bilbao.
- Spain U21
- Spain U17
- El vigués Diego Mariño jugará el próximo curso en el Villarreal B (Vigo's Diego Mariño will play next season with Villarreal B); La Voz de Galicia, 9 June 2010 (Spanish)
- El Real Valladolid ficha al portero Diego Mariño (Real Valladolid signs goalkeeper Diego Mariño); El Norte de Castilla, 5 July 2013 (Spanish)
- Valverde tastes opening-day win; ESPN FC, 17 August 2013