Prime Minister Anutin Charnvirakul will begin an official visit to Indonesia on Monday, the first by a Thai PM to the country in 15 years, the government said.
Government spokeswoman Rachada Dhnadirek said Mr Anutin, who also serves as interior minister, will arrive in Jakarta for talks with Indonesian President Prabowo Subianto.
On Tuesday, Mr Anutin will attend the Indonesia-Thailand Business Forum, jointly organised by the Indonesian Chamber of Commerce and Industry and the Thai Chamber of Commerce in Indonesia, before meeting Asean Secretary-General Kao Kim Hourn at the Asean Secretariat.