Navin Yavapolkul (; born February 8, 1979), known professionally as Navin Tar, is a Thai singer, actor and lecturer of Kasetsart University.
Navin Yavapolkul was born February 8, 1979, in Bangkok, Thailand. He graduated from Kasetsart University (First class honors) with a Bachelor of Economics. He also attended Oregon State University where he earned his master's degree. Yavapolkul received his PhD from the University of California, Davis. He is a professor at Kasetsart University, where he teaches Mathematics for Economists and Microeconomics.
Yavapolkul has participated in several triathlons.
He married with Passawee Payakbud on March 25, 2017 He has daughter name Pinnava Yavapolkul nickname Luca.