Lewin José Díaz (born November 19, 1996) is a Dominican professional baseball first baseman for the Samsung Lions of the KBO League.

[2] He opened the 2019 season back with Fort Myers, before being promoted to the Pensacola Blue Wahoos on June 19.

[3] On July 27, 2019, the Twins traded Díaz to the Miami Marlins in exchange for Sergio Romo, Chris Vallimont, and a player to be named later.

He made his debut that day against the Atlanta Braves and got his first major league hit in his only at-bat against Mark Melancon.

[18] On January 17, Díaz cleared waivers and was assigned outright to the Triple-A Norfolk Tides.

[20] On December 22, 2023, Díaz signed a minor league contract with the Washington Nationals that included an invitation to spring training.

On July 1, 2024, Díaz was traded to the Diablos Rojos del México of the Mexican League in exchange for P Oscar Rojas.

On October 1, Diaz's Mexican League rights were traded back to the Piratas de Campeche.