Stephen Rowley Montague (born March 10, 1943, in Syracuse, New York)[1] is an American composer, pianist and conductor who grew up in Idaho, New Mexico, West Virginia and Florida.

He did additional study in conducting at the Mozarteum, Salzburg, Austria, 1966, computer music at IRCAM, Paris, 1981, and at Stanford University, California, 1984.

Montague was born and educated in the US, but lived in Warsaw, Poland (1972–74) on a Fulbright Fellowship, and since 1974 in London working as a freelance composer, pianist, conductor touring worldwide.

In addition, Montague has created multi-channel electroacoustic sound environments in collaboration with the sculptor, Maurice Agis in Agis's large Colorspace and Dreamscape inflatable sculptures, and composed a number of music theatre works for outside spaces such as his Horn Concerto for klaxon horn soloist with an orchestra of automobiles, and [Bennett's Bike Concerto for piano soloist (World Superbike Champion, James Toesland), symphonic brass ensemble, percussion and 8 motorcycles for the 2007 World Superbike Championships, Brands Hatch Race Track (UK).

He was the music director for the Royal Opening of The Francis Crick Institute (London) 2016, and organised and directed one of the international Merce Cunningham Centennial dance/music events at Florida State University in 2019.

Recent composer portraits of his music have taken place in London, New York, Chicago, Columbus (OH), Houston, Mexico City, Vienna, Budapest, and Singapore.