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Hulk Hogan 's wife -- not his daughter -- is the only one who can make the decision on an autopsy for the WWE legend, TMZ Sports is told.

The District Six Medical Examiner in Largo, Fla., said on Friday that despite Brooke Hogan 's wishes for a probe into her father's body ... it'll ultimately be Sky Daily 's choice. Gallery Launch Gallery Getty

For now, the official said, they have been given no indication Sky is seeking a report.

Sky, though, did intimate on Wednesday she could eventually request one ... when she revealed Hulk has not yet been cremated "as our family is making sure every question about his medical care is answered first."

The District Six Medical Examiner stated Sky would have to report any suspicions about Hulk's death to cops ...

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