Nguyen Thúc Thuy Tiên, 23, of Ho Chi Minh City, Vietnam is Miss Grand International 2021. She was crowned at the SHOW DC Retail and Entertainment Mega Complex in Bangkok, Thailand on December 4, 2021.
Runner-up to Nguyen was Andrea Victoria Aguilera Paredes, 20, of Ecuador. Lorena Goncalves Rodrigues, 26, of Brazil, Vivianie Diaz Arroyo, 23, of Puerto Rico and Jeanè Van Dam, 20, of South Africa were the respective second, third and fourth runners-up.
Born in Ho Chi Minh City, Nguyen was only 4 years old when her parents separated. She was raised by her aunt.
Before Miss Grand International 2021, Nguyen was Miss Southern Vietnam 2017 first runner-up and a Miss Vietnam 2018 finalist. She was unplaced when she represented Vietnam at Miss International 2018 in Tokyo, Japan.
On August 13, 2021, Nguyen was appointed as Miss Vietnam Peace 2021, making her Vietnam’s Miss Grand International 2021 representative. She was officially crowned on November 16, 2021.
Matthew Deane, 43, hosted the Miss Grand International 2021 coronation night. It was the ninth edition of the Thailand-based international beauty pageant founded by Nawat Itsaragrisil, 67.
Including Nguyen, a total of 60 women competed for the crown. The judges were five former titleholders namely Janelee Chaparro, 30, of Puerto Rico, Lees Garcia, 34, of Cuba, Ariska Putri Pertiwi, 26, of Indonesia, Maria Jose Lara, 31, of Peru and Clara Sosa, 28, of Paraguay, who were crowned in 2013, 2014, 2016, 2017 and 2018, respectively.
Arroyo was Best in Swimsuit while Indy Johnson, 23, of Thailand was Best in Evening Gown. The Best National Costume winners were Lishalliny Kanaran, 24, of Malaysia, Samantha Elizabeth Batallanos Cortegana, 26, of Peru and Marcia Marilia Menezes, 27, of Angola.