Lil Poppa — a popular rapper based out of Jacksonville, Florida — has died … TMZ has learned.

The Fulton County Medical Examiner’s Office in Georgia tells TMZ … the rapper — real name Janarious Mykel Wheeler — was pronounced dead today at 11:23 AM ET.

His cause of death was not immediately released.

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Lil Poppa was signed to Yo Gotti’s Collective Music Group (CMG) and has released several hit tracks over the last few years, including “Love & War,” “Mind Over Matter,” and “HAPPY TEARS.”

Poppa’s 16-song album “Almost Normal Again” came out in August … and, he released a new single titled “Out of Town Bae” this past Friday. Lil Poppa was scheduled to perform next month in New Orleans.

Lil Poppa was 25.

RIP