Niratcha Tungtisanont competed in the 2011 Miss Thailand Universe pageant at Royal Paragon Hall in Bangkok, where she became the first runner-up, gaining the right to the official representative of Thailand at Miss Earth 2011, Manila, Philippines, placed in a semi-finalist (Top 16) and received People's Choice Award and Miss Golden Sunset,
Tungtisanont was born and raised in Bangkok, Thailand. She graduated from the University of Arizona with BA in Economics and Mathematics, getting a full graduate assistant scholarship to complete her Master of Science in Agricultural and Resource Economics degree from University of Arizona, United States of America. She completed her MS in July 2010.
While competing in Miss Thailand Universe pageant she also received many offers to pursue her Ph.D. from various universities in the United States.