Nguyễn Hai Long (born 27 August 2000) is a Vietnamese professional footballer who plays as a central midfielder for V.League 1 club Hà Nội and the Vietnam national team.

He and Viettel won the runner-up of the U-13 tournament and the National U-15 champion before returning to train for Than Quảng Ninh's youth team in 2015.

He received many compliments from the fans for his skillful and convincing performance, helping the "mine team" win against the opponent in the 5th round of the V-League 2020.

In October 2021, after the news that Than Quảng Ninh was in danger of shutting down, Hà Nội quickly recruited Hai Long with a 5-year contract.

Although this is only a small gathering for the Korean strategist to check his expertise, it is also a worthy achievement for the efforts of this young midfielder.