Anek cited health problems as his reason to leave, saying that it could affect his work and company operations. He did not specify his health problem.
The MCOT is a state-owned public broadcaster which owns and operates a number of radio and television stations in Thailand, based in Bangkok.
Jessada Promjart, Exective Vice President and Chief Finance Officer, was appointed acting president during the process to find a new president.
Anek on May 2 has issued statement, denying rumours that he was resigning. However he was on sick leave May 6-16.
He was appointed by the company's executive board on September 26, 2012 and formally began work as MCOT president on October 1, 2012.