Guto Pryderi Puw (born 1971) is a Welsh composer, university lecturer and conductor. He is considered to be one of the most promising Welsh composers of his generation and a key figure in current Welsh music. Puw's music has been broadcast on BBC Radio 3 and been featured on television programmes for the BBC and S4C. He has twice been awarded the Composer's Medal at the National Eisteddfod.
Puw's works include pieces for unusual combinations of instruments, such as a tuba quartet or a trio consisting of harp, cello and double-bass, as well as more traditional forces such as solo baritone and piano, choir or orchestra. He was associated with the BBC National Orchestra of Wales as its Resident Composer, the first holder of this title, from 2006 to 2009. Puw wrote an Oboe concerto as part of this association, and his latest composition for the orchestra was premiered at the 2007 Proms. Puw's own Welsh identity is a recurrent theme in his music: some of his pieces set Welsh-language poetry to music and one of his pieces, Reservoirs, is written about the flooding of Welsh valleys to provide water for England.