Jenni Hermoso has filed a legal complaint over the kiss by Spanish football federation president Luis Rubiales.
Rubiales kissed Hermoso on the lips after Spain's World Cup final win, which she says was not consensual.
Rubiales claims the kiss was "mutual and "consensual", but has been provisionally suspended by football's world governing body Fifa.
The complaint means the 46-year-old could face criminal charges.
A statement from the national prosecutor's office said: "Jennifer Hermoso filed an express complaint for the facts that you all know.
"The national court's prosecutor's office will file a complaint as soon as possible. The statement took place at the state attorney general's office to protect the privacy of the victim."
On 29 August, Spanish prosecutors opened a preliminary investigation into whether the incident amounts to a crime of sexual assault.
At the time, Spain's top criminal court said it was opening its investigation in light of the "unequivocal nature" of 33-year-old Hermoso's statements, saying it was necessary "to determine their legal significance".
"Given the public statements made by Jennifer Hermoso, the sexual act she was subjected to by Luis Rubiales was not consensual," a statement said.
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