Of the squad, 15 have previously received call ups.
The squad announcement represents the second time that head coach Park Hang-seo has called players up for a training camp ahead of the competition.
The number of players in the team will be cut down at a later date with the official squad for the tournament being announced later this year.
Vietnam’s U22s will take part in a training camp at the Promotion Fund for Vietnamese Football Talent (PVF) Football Training Centre in the northern province of Hung Yen from July 22 to July 24.
The camp will conclude with a friendly match against Viettel FC on July 24.
Here is the list of Vietnam’s U22 squad:
Goalkeepers: Do Sy Huy (Hong Linh Ha Tinh FC), Phan Van Bieu (SHB Danang FC)
Defenders: Huynh Tan Sinh (Quang Nam FC), Nguyen Khac Vu (Long An FC), Le Ngoc Bao (Pho Hien FC), Nguyen Van Dat (Hong Linh Ha Tinh FC), Nguyen Ba Duc (SLNA FC), Vu Viet Trieu (Quang Ninh Coal FC), Duong Van Trung (Binh Phuoc FC), Nguyen Huu Lam (Thanh Hoa FC)
Midfielders: Nguyen Sy Tu (Phu Dong FC), Tran Van Buu (Sai Gon FC), Nguyen Vu Tin (Sai Gon FC), Trieu Viet Hung, Phan Thanh Hau, Tran Bao Toan (HAGL FC), Martin Lo, Nguyen Trong Long (Pho Hien FC), Nguyen Trong Hung (Thanh Hoa FC), Luong Hoang Nam (Hai Phong FC), Nguyen Hong Son (Quang Nam FC), Nguyen Dinh Manh (Nam Dinh FC).
Forwards: Nguyen Tran Viet Cuong (Becamex Binh Duong FC), Huynh Tien Dat (Pho Hien FC), Mai Xuan Quyet (Nam Dinh FC), Pham Duc Thong (Pho Hien FC).
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