Grant Koch (born February 5, 1997) is an American professional baseball catcher who is a free agent.

[2] He made his professional debut with the Low–A West Virginia Black Bears, hitting .188/.304/.263 with two home runs and 11 RBI over 40 contests.

[3] Koch spent 2019 with the Single–A Greensboro Grasshoppers, playing in 94 games and batting .202/.274/.318 with eight home runs and 34 RBI.

[5] Koch returned to action in 2021 with Greensboro and the Double–A Altoona Curve, accumulating a .178/.259/.348 slash line with 10 home runs and 36 RBI across 70 games.

[8] Koch began the 2024 season with the Triple–A Indianapolis Indians, hitting .167/.211/.259 with one home run and five RBI across 17 games.