Miss Universe Vietnam 2019 was the fourth Miss Universe Vietnam pageant, held at the Crown Convention Center in Nha Trang, Khánh Hòa, Vietnam, on 7 December 2019.
H'Hen Niê crowned Nguyá» n Trần Khánh Vân as her successor at the end of the event. Nguyá» n Trần Khánh Vân represented Vietnam in the Miss Universe 2020 competition in Hollywood, Florida, where Khánh Vân finished in the top 21.
On 20 November 2021, Nguyá» n Huỳnh Kim Duyên was appointed as Miss Universe Vietnam 2021 and represented the country at the Miss Universe 2021 competition, finishing in the top 16.
As with Miss Universe Vietnam 2017, the competition was accompanied by a reality TV series called I Am Miss Universe Vietnam in which the top 60 contestants were put through challenges and training programs in each episode. This year, 15 contestants were eliminated before the preliminary round.
The top 45 contestants participated in the preliminary competition on 3 December 2017 in áo dài, swimsuit and evening gown contests. At the finale on 7 December, the contestants were trimmed down to 15, and proceeded to compete in an opening statement and swimsuit contest. After that, the top 10 contestants advanced to the evening gown competition. Five contestants then had an interview round that determined the top three contestants were. The top 3 then participated in another question and answer round to find the winner.
The judging panel for the competition included:
After a nationwide audition process, top 60 contestants were selected to continue to compete for the title. The following list includes each contestant's ranking after each episode of the series, based on the score of their performance.