Nguyễn Thành Khải (born 28 October 2002) is a Vietnamese professional footballer who plays as a centre back for V.League 2 club SHB Đà Nẵng.
Born in Quảng Nam, Thành Khải was a youth member of the SHB Đà Nẵng.
In 2023, he captained SHB Đà Nẵng's reserves side in the Vietnamese Second Division, helping the club finish second of their group in regular season as they advance to the promotion play-off.
There, Thành Khải and his teammates lost to Đồng Tháp on penalty shootout after a goalless draw in regular time.
[4] In April 2024, Thành Khải was named in Vietnam U23 preliminary squad for the 2024 AFC U-23 Asian Cup.