Roni Size (born Ryan Williams, 29 October 1969 in Bristol) is a British music producer and DJ who came to prominence in 1997 as the founder and leader of Reprazent, a drum and bass collective. That year they won the Mercury Prize for their album New Forms.
Roni Size resurrected Reprazent in 2008 with the release of a deluxe edition of his Mercury Music Prize winning album 'New Forms' on Universal. 2009 is shaping up to be another busy year for Roni with the release of a new Reprazent album, a new Roni Size album, DJ shows with Dynamite MC and a Reprazent tour across numerous continents.
Roni being from Bristol is a big Bristol Rovers fan and can often be seen at matches.