Charges have been dropped against three brothers who were accused of raping a 14-year-old girl in Geelong in 2015.

Allan Mark Wild, 30, Kevin Andrew Wild, 29, and Brodie Mark Wild, 20, had been ordered to stand trial after pleading not guilty in June last year to rape and abduction charges.

They had been accused of raping the girl in a park.

But prosecutors told the Supreme Court this morning they would not proceed with the case.