Roy Montgomery (born 1959) is a composer, guitarist and lecturer from Christchurch, New Zealand. Montgomery's mostly instrumental solo works have elements of post-rock, lo-fi, folk and avant-garde experimentation. His signature sound might be described as atmospheric or cinematic, often featuring complex layers of chiming, echoing and/or droning guitar phrases. He is currently head of the environmental management department at Lincoln University in New Zealand.

Montgomery has played in several bands since the late 1970s, most notably The Pin Group, Dadamah, Dissolve and Hash Jar Tempo. He has released solo albums on labels including Kranky and Drunken Fish, as well as collaborations with artists like Flying Saucer Attack and Grouper. Music critic Brett Abrahamsen opined that "in a just and fair world... books would be written about Montgomery's greatness."