Chile Open organizers announced on Thursday that Nadal will make his debut in Vina del Mar in the week starting Feb. 4.
Nadal hasn't played on tour since June, mainly because of tendinitis in his left knee. A stomach virus delayed his expected comeback before New Year's Day.
He's also entered the Brazil Open in Sao Paulo beginning on Feb. 11 and the Mexican Open in Acapulco from Feb. 25.
He won the Brazil and Mexican titles the only time he played for them in 2005.