Kevin Patrick Shields (born 21 May 1963) is an American-born Irish musician, singer-songwriter, composer, and producer, best known as the vocalist, guitarist and primary songwriter of the band My Bloody Valentine. They became influential on the evolution of alternative rock with two of their studio albums Isn't Anything (1988) and Loveless (1991), pioneering a subgenre known as shoegaze. Shields's texturised guitar sound and his experimentation with his guitars' tremolo systems resulted in the creation of the "glide guitar" technique, which became a recognisable aspect of My Bloody Valentine's sound, along with his meticulous production techniques.

Following My Bloody Valentine's dissolution in the late 1990s, Shields became a frequent guest musician, producer, engineer, and remixer with various bands and artists, including Experimental Audio Research, Yo La Tengo, Dinosaur Jr, and Mogwai. In 1998 he became a touring member of Primal Scream. Shields contributed several original compositions to the soundtrack of Sofia Coppola's 2003 film Lost in Translation, which earned him nominations for the British Academy of Film and Television Arts (BAFTA) and Irish Film and Television Academy (IFTA) awards. In 2008, Shields released a collaborative live album together with Patti Smith entitled The Coral Sea.

My Bloody Valentine reunited in 2007; the band released their third studio album, m b v, in February 2013. The album was composed entirely by Shields and had been in production since the late 1990s, when Shields was rumoured to have been suffering from writer's block. Shields has since been featured in several publications' best-of-lists, including Rolling Stone's 100 Greatest Guitarists and Spin's 100 Greatest Guitarists of All Time. Multiple musicians have also cited him as an influence, including Billy Corgan and J Mascis.