Jimmy O'Brien may refer to:
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Jimmy O'Brien (hurler), Irish hurler
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Jimmy O'Brien (rugby union), Irish rugby union player
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Jomboy (sports media)
James Vincent Michael O'Brien (born February 18, 1989), better known by his nickname Jomboy, is an American baseball commentator, podcast host, and internet personality. He co-created the popular New York Yankees podcast ''Talkin' Yanks'' in 20 ...
, YouTuber who is named Jimmy O'Brien
{{hndis, Obrien, Jimmy