On 27 January 2016 it was announced that Chanathip along with his BEC Tero teammates Peerapat Notchaiya and Tanaboon Kesarat would be joining Muangthong United on loan for the 2016 season.[1] Chanathip netted his first goal for Muangthong United on 1 May 2016 when he scored from Tristan Do's cross in the 18th minute, in what turned out to be the only goal in a victory over Chonburi.