This is a list of ministers of defence of Thailand.

Until the appointment of the incumbent, Sutin Klungsang, aside from Prime Ministers holding the post concurrently, all ministers had been active-duty or retired flag officers.

[1] Sutin is the first civilian to be the head of the Ministry of Defence without holding the post of Prime Minister simultaneously, which were held by five former prime ministers without a military background.

[2] List of Siamese Ministers of Defense (Thai: เสนาบดีกลาโหม, Senabodi Kalahom)[3] List of ministers of defence of Thailand (Thai: รัฐมนตรีว่าการกระทรวงกลาโหม Ratthamontri Wakarn Kasuang Kalahom)[3]