Tanaboon Kesarat (Thai: ธนบูรณ์ เกษารัตน์, born 21 September 1993) is a Thai professional footballer who plays as a defensive midfielder or a centre-back where he captain the Thai League 1 club Port.

Tanaboon played for Thailand U19 in the 2012 AFC U-19 Championship qualification. His performances during the tournament caught the eyes of Andrew Ord, who was building an exciting side at BEC Tero Sasana with other youngsters like Chanathip Songkrasin, etc.

In 2013, he was selected for Thailand's first team squad and came in as a substitute in a 5-1 victory over China on 15 June.

He represented Thailand U23 in the 2013 Southeast Asian Games. He also represented Thailand U23 in the 2014 Asian Games.

Tanaboon was part of Thailand's winning squad in the 2014 AFF Suzuki Cup. During the last group stage game against Myanmar, Tanaboon scored the first goal of a 2-0 win with a stunning strike from outside the area. In 2015, he won the 2015 Southeast Asian Games with Thailand U23.

During the 2018 FIFA World Cup qualification, he has usually been in the starting lineup of Thailand.

Tanaboon's brother, Somjets Kesarat, also plays football as a midfielder.