Oscar Tuero (December 17, 1898 – October 21, 1960) was a professional baseball player. He was a right-handed pitcher over parts of three seasons (1918–1920) with the St. Louis Cardinals.

For his career, he compiled a 6–9 record in 58 appearances, mostly as a relief pitcher, with a 2.88 earned run average and 58 strikeouts.

Tuero was born in Havana, Cuba and died in Houston, Texas at the age of 61.

• List of Major League Baseball annual saves leaders

• Career statistics from Baseball Reference, or Baseball Reference (Minors)