BANGKOK (Reuters) - Thailand's new Prime Minister Srettha Thavisin will miss a regional meeting of Asia's leaders in Jakarta this week, two officials with knowledge of the matter said on Sunday.

Srettha won a parliamentary vote to become prime minister last month and his cabinet was endorsed by the king on Saturday.

The prime minister and his cabinet are due to take an oath before an audience with King Maha Vajiralongkorn on Tuesday and will then deliver a policy address in parliament. They can then officially carry out their duties.

Permanent secretary Sarun Charoensuwan will represent Thailand at the Association of Southeast Asia Nation (ASEAN) Summit, the two officials said. They did not say specifically why the prime minister was not attending.

(Reporting by Panu Wongcha-um; Writing by Chayut Setboonsarng; Editing by Hugh Lawson)