Vietnam will send 135 youth delegates to the 17th World Festival of Youths and Students in South Africa, according to the country's youth union.
The festival will take place from December 13-21 in Johannesburg.
The world youth's most significant forum this year will host daily conference sessions on social, political and economic issues facing today's youth.
It will also feature a cultural program that includes a poetry and song contest, and young filmmakers' meeting.
About 30,000 delegates from all over the world are expected to attend the event, which is held every four years by the World Federation of Democratic Youth with 153 member countries.