Robert Steven Moore (born January 18, 1952) is an American multi-instrumentalist, singer, and songwriter who pioneered lo-fi (or "DIY") music. Often called the "godfather of home recording", he is one of the most recognized artists of the cassette underground, and his influence is particularly felt in the bedroom and hypnagogic pop artists of the post-millennium. Since 1968, he has self-released approximately 400 albums, while about three dozen "official" albums (largely compilations) have been issued on various labels.

Born the son of Nashville A-Team bassist Bob Moore, Steven grew up in the 1960s listening to the Beatles, the Beach Boys, the Mothers of Invention, and Jimi Hendrix. In his teens, he acquired access to a reel-to-reel stereo tape deck and began recording as a one-man band in his parents' home. The innovative manipulation of low fidelity recording processes in his early albums defined his general aesthetic. With help from his uncle, he made his official label debut with 1976's compilation Phonography, which was well received in New York's punk and new wave circles. Although he is best known for "'60s-inspired power pop in the XTC vein," his body of work incorporates a variety of music genres, both popular and experimental, and his records are typically styled after freeform radio. He describes his prolific output as "a diary of sound".

From 1978 until 2010, Moore lived and recorded in his apartment studios in northern New Jersey. He was also a WFMU staff member for a number of years. In 1982, he launched the R. Stevie Moore Cassette Club, his home-based mailing service. Throughout the 1980s, the French label New Rose released a series of Moore vinyl albums: Everything (1984), Glad Music (1986), Teenage Spectacular (1987), and Warning (1988). After the 2000s, he became better known for his associations with Ariel Pink, who frequently praised Moore as his "mentor".