Players: O
451 players
Type to filter • Showing 451 of 451 players
About the O directory
451 last names starting with O appear below, in alphabetical order. Owens, O'Brien, and Ortiz are the surnames that repeat most often on the page. Debut years run from 1872 (Jim O'Rourke) to 2026 (Abimelec Ortiz). By debut decade, the 2010s contribute the most names to this letter. Players on a current roster, such as Riley O'Brien, Ryan O'Hearn, and Logan O'Hoppe, show “Current” as the end of their span. Entries without years are people in the register with no major league debut date on file, such as Negro Leagues players known from box scores alone. The filter above the list narrows it as you type, and the Active toggle limits it to current rosters. Use the alphabet bar to jump to another letter, or return to the full player directory.