Nirut Sirijanya, nicknamed Nhing, is a Thai film and television actor, born to a Thai Police Lieutenant and a Thai woman whose mother was half Thai-French.

He attended Assumption College in Bangkok and received a graduate certificate in Business Administration in Australia. He then went to Kuala Lumpur to study. When he graduated with a Bachelor of Science degree, he started working at AM PAC as an engineer, before moving to positions in various airline companies, including Alitalia.

Nirut began his acting career at the suggestion of Terng Stiphuang. His first TV series was Sangsoon, in which he co-starred. He then starred in Kae Kop Fah (Just Horizon), shown on Channel 3. By now known throughout Thailand, he attracted the most attention for his part as Jaded in Poo Cha Na Sib Tid.

His first film was Derby, and he continues to perform to this day. He gained international attention from his role in The Hangover Part II. Nirut is best known internationally for his role as Lauren's father Fong in the 2011 sequel The Hangover Part II. He is the recipient of Suphannahong National Film Awards for Best Supporting Actor in 2006. Nirut also appeared as a judge in the first season of Thailand's Got Talent.