Ryan Scott Lewis (born March 25, 1988) is an American musician and record producer based in Seattle, Washington. Along with producing his own album, Instrumentals, Lewis produced the albums The VS. EP (2009), The Heist (2012), and This Unruly Mess I've Made (2016) as part of the duo Macklemore & Ryan Lewis. He also directed 12 Macklemore & Ryan Lewis videos.

In 2006, Lewis befriended rapper Macklemore on Myspace and soon after became his behind-the-scenes partner, producing, recording, engineering and mixing all of the duo's music and directing the music videos for "Same Love", "Thrift Shop", "And We Danced", "Otherside (Remix)", "Can't Hold Us", "Irish Celebration", "My Oh My", "Victory Lap", "Downtown", "Brad Pitt's Cousin" and "White Walls" and designing promotional graphics.