Martyn Brabbins (born 13 August 1959) is a British conductor. He studied at Goldsmiths, University of London, and later was a conducting student of Ilya Musin at the Leningrad Conservatory.

Brabbins first came to international attention when he was awarded first prize at the Leeds Conductors Competition in 1988. Between 1994 and 2005, Brabbins was Associate Principal Conductor of the BBC Scottish Symphony Orchestra. He became principal conductor of Sinfonia 21 in 1994.

He was artistic director of the Cheltenham Music Festival from 2005 to 2007. During his Cheltenham tenure, he established a new ensemble, the Festival Players.

In Leeds, he created a new chamber music series called "Music in Transition". On 17 July 2011, Brabbins conducted the 6th live performance of Havergal Brian's Symphony No. 1 ('The Gothic') at The Proms, which was later released on a Hyperion commercial recording. Brabbins was subsequently named president of the Havergal Brian Society. Brabbins is also conductor laureate of the Huddersfield Choral Society.

Outside of the UK, Brabbins became principal guest conductor of deFilharmonie (Royal Flemish Philharmonic) in 2009. In December 2011, Brabbins was announced as the next chief conductor of the Nagoya Philharmonic Orchestra, and formally took up the post with the 2013-2014 season.

In 2002, Brabbins founded a training course for aspiring conductors at the St Magnus International Festival in Orkney., which he continues to co-direct.

Brabbins has conducted commercial recordings of music for such labels as Warner, Chandos, Hyperion,NMC, Nimbus, and Deutsche Grammophon