Vietnam at major beauty pageants

This is a list of Vietnam's representatives and their placements at the Big Four international beauty pageants, considered the most important in the world. The country has won one of the four pageants:

'''The criteria for the Big Four inclusion is based on SPECIFIC STANDARDS such as the pageants global prominence and prestige, the quality and quantity of crowned delegates recognized by international franchisees and pageant aficionados, the winner's post pageant activities; the pageants longevity, consistency, and history; the pageant's specific purpose, relevance, and advocacy; the overall production quality and global telecast; the enormity of internet traffic; and the popularity amongst pageant fans across the globe.

Ended as Runner-up
 * Color Key

Ended as one of the Finalists or Semi-finalists