Watchara Atchariyavaranon 'Jeng' (b. 1988) is one of the most renowned jazz trumpeter in Thailand. He graduated from Mahidol University, College of Music (B.Mus) and is currently working towards his Masters of Education at Mahidol.

Jeng's musical journey began at the Montfort College, Chiang Mai, where he played the trumpet during the first year of his middle school. An opportunity to join “SAYOWE”(South East Asian Youth Orchestra and Wind Ensemble music camp) cemented his mind to pursue music as a career. Since then, he has won several accolades such as 1st Prize in the KPN Band Competition in 2004 and being a finalist in the Thailand International Jazz Competition in 2007 and 2008 respectively.

As a performer, Jeng has performed with the Mahidol Wind Symphony, Mahidol Jazz Orchestra, Root Man Band, Siam Cubano, Dixielogy, Smith Big Band, Siam Jazz Orchestra and ETC. He is also active as a recording artist for commercials and television music in Thailand with Wild at Heart Co, Ltd.

As an educator, Jeng has taught at the Music Campus for General Public (Siam Paragon) and St. Andrew's Samakee International School.

He is currently the Brass Jazz instructor and Big Band conductor at Bansomdejchaopraya Rajabhat University.