Míriam Diéguez de Oña (born 4 May 1986), commonly known as Míriam, is a Spanish football midfielder who plays for Alavés.
She previously played for Espanyol, Rayo Vallecano, FC Barcelona, winning the league with all three.
She was Espanyol's captain during her last years with the team.At international level Míriam won the 2004 U-19 European Championship and also represented Spain at the subsequent U-20 World Cup.She appeared for the senior Spain women's national football team in a 2–2 home draw with Finland on 15 February 2005.
In June 2013, national team coach Ignacio Quereda included Míriam in his Spain squad for UEFA Women's Euro 2013 in Sweden.