Listed below are the Major League Baseball players who have hit 2 Grand slams in the same game.

Notes

• Tony Cloninger is the only pitcher in the list
• Fernando Tatis is the only player to hit his slams during the same inning
• Tony Lazzeri, Jim Tabor and Jim Gentile, belted their slams in consecutive innings
• Bill Mueller is the only player to hit his slams from opposite sides of the plate
• Jim Northrup hit his slams in consecutive at-bats