Basketball, surnames starting with O: showing 49–96.

• IOInga OrekhovaAtlanta Dream, Guard
• IOIrina OsipovaDetroit Shock
• Isaac OkoroChicago Bulls, Forward25years old
• J.J. O'BrienUtah Jazz, Forward34years old
• Jahlil OkaforDetroit Pistons, Centre
• JOJennifer O'NeillMinnesota Lynx, Guard
• Jermaine O'NealPortland Trail Blazers, Centre48years old
• JOJimmy de OliveiraFranca, Guard

Professional competitions only. Pick a competition to see everyone who has played in it, with games and seasons, or a club for its full list. Club pages also show the current squad and every former player we hold.