Malcolm David Kelley (born May 12, 1992), sometimes credited as just Malcolm Kelley, is an American actor and a singer. He is best known for portraying the character Walt Lloyd on the ABC series Lost and as one half of the pop duo MKTO.
Kelley's first major acting role was in the 2002 film Antwone Fisher, in which he played the title character as a child. Prior to this, he appeared in several small television roles in programs such as Malcolm in the Middle and Judging Amy. His next film role was You Got Served, in which he was cast in the supporting role of Lil' Saint.
In 2012, Kelley and his former Gigantic co-star Tony Oller formed the pop duo MKTO. They were signed to Columbia Records. The duo's debut self-titled album, was released on April 1, 2014. Their single "Classic" was a major hit in the summer of 2014, reaching number 14 on the Billboard Hot 100.