Carlos Mario Álvarez Sánchez (born 12 September 1956) is a Cuban sprinter. He competed in the men's 4 × 400 metres relay at the 1976 Summer Olympics. He won a silver medal at the 1975 Pan American Games in the 4 x 400 metres relay.
International competitions Representing 1975Pan American GamesMexico City, Mexico2nd4 × 400 m relay3:02.821976Olympic GamesMontreal, Canada7th4 × 400 m relay3:03.811978Central American and Caribbean GamesMedellín, Colombia6th400 m46.723rd4 × 400 m relay3:05.571979Pan American GamesSan Juan, Puerto Rico12th (sf)400 m47.263rd4 × 400 m relay3:06.3
Personal bests 400 metres – 46.3 (1976)
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