Lia Marie Johnson (born November 23, 1996) is an American internet personality, actress, and singer. She first received recognition for her work on YouTube, rising to fame for creating skits and song covers, and for her appearances in the Fine Brothers web series Kids React (2010–2011). She then played Terry the Tomboy in the sketch comedy series AwesomenessTV (2013–2014) and the Nickelodeon television movie Terry the Tomboy (2014).

Johnson self-released her debut single "Moment Like You" in 2015, and signed with Capitol Records the following year. She then starred in the YouTube Premium films The Thinning (2016) and The Thinning: New World Order (2018), and in the web series T@gged (2016–2018). She independently released her debut extended play Pomegranate in 2024.