Kritsanut Lertsattayathorn (; born 16 December 1988 in Bangkok, Thailand) is a Thai former professional snooker player. He was the Asian Snooker Champion in 2016.
At the 2014 Six-red World Championship Lertsattayathorn defeated defending champion Mark Davis in the last 16 before being defeated 7âÂÂ2 eventual winner Stephen Maguire in the semi-final. In 2016 Lertsattayathorn entered the Asian Snooker Championship in Doha as the 13th seed. Lertsattayathorn went on to reach the final and defeated Mohammed Shehab 8âÂÂ2 to win the championship, as a result he was given a two-year card on the professional World Snooker Tour for the 2016âÂÂ17 and 2017âÂÂ18. At the 2016 English Open, Lertsattayathorn beat compatriot Boonyarit Keattikun 4âÂÂ3 and Michael White 4âÂÂ1. In the third round he was 3âÂÂ2 up on Ricky Walden, but then lost the final two frames. Walden also beat Lertsattayathorn by a 4âÂÂ3 scoreline in the second round of the Northern Ireland Open. He lost all five of his matches in the rest of the season.