WBC champions Pongsaklek Wonjongkam and Kompayak Porpramook will defend their titles next month while Terdsak Kokietgym will challenge for a world title in April.
Flyweight champion Pongsaklek (83-3-2, 44KOs) will fight Sonny Boy Jaro of the Philippines (33-15-5, 23KOs) in Chon Buri on March 2.
The 29-year-old Jaro, ranked eighth in the 112-pound division, is a highly-rated boxer who has been sparring with WBC silver strawweight champion Denver Cuello.
It is reported that the winner of the fight must next take on Japan's Toshiyuki Igarashi in a mandatory fight.
Kompayak will make the first defence of his light-flyweight crown against contender No.6 Jonathan Inguito Taconing of the Philippines in his native province of Buri Ram on March 30.
In December, Kompayak (44-3-0, 30KOs) stopped Mexican Adrian Hernandez in the 10th round to win the belt. The fight was later named by the WBC as the most dramatic bout of the year.
Taconing (12-1-1, 9KOs) is now the WBC international light-flyweight champion. In his last defence, he beat Thailand's Ngaoprajan Chuwatana in the Philippines.
Terdsak, the top contender in the 130-pound division, will challenge champion Takahiro Ao for the WBC super-featherweight title in Tokyo on April 6.
It will be the 30-year-old Thai's third shot at a world title after two failed attempts.
Ao (22-2-1, 10KOs) is three years younger than the Thai.
He won the title in November 2010 with a win over Germany's Vitali Tajbert in Nagoya.
It will be his third title defence after defeating Devis Boschiero of Italy by a split decision in November.