Gruffudd Maredudd Bowen Rhys (born 18 July 1970) is a Welsh musician, composer, producer, filmmaker and author. He performs solo and with several bands, including Super Furry Animals, which obtained mainstream success in the 1990s. He formed the electro-pop outfit Neon Neon with Boom Bip. Their album Stainless Style was nominated for the 2008 Nationwide Mercury Prize.

He won the 2011 Welsh Music Prize for his album Hotel Shampoo, which was followed up by American Interior in 2014, accompanied by a film, a book and a mobile app. His most recent album, Seeking New Gods, was released in 2021. He is considered a figurehead of the era known as Cool Cymru.