Jason Thanh Nguyen (born May 9, 2004), professionally known as jasontheween, is an American online streamer, YouTuber, and singer-songwriter of Vietnamese descent known for his streams on Twitch.

He’s from Fort Worth, Texas, but was fully raised in Arlington during his childhood. He was raised by his aunt until his teenage years. He is a three-time spelling bee champion in Arlington Independent School District. Jason started his Twitch career in 2018 under a different username, NguyenMoneySniper, or known as NMS in which he called his fanbase.

In 2024, Jason was a former member of the rebooted FaZe Clan. In December 2025, he officially tweeted on Twitter saying he left the group, as well as others like Silky, Lacy, Stable Ronaldo, and Adapt.

In 2025, Jason was featured in a remix of “GBAD" with Hong Kong singer-songwriter and rapper Jackson Wang. Two months later, he released his third EP J + S, which streamed over millions on Spotify. Following the success of the EP, he released a single, “Summer Uptown” with d4vd, which is distributed under Virgin Music Group.

Throughout his music career, he has not planned to sign a major record label, as he doesn’t see a reason for it, according to one of his VOD clips.