Lukasz Sebastian "Luke" Gottwald (born September 26 1973), better known as "Dr. Luke," is an American songwriter, record producer, multi-instrumentalist, and remixer. Dr. Luke's professional music career began in the late night television sketch comedy Saturday Night Live as its house band's lead guitarist in 1997 and producing remixes for artists such as Bon Jovi and Gravediggaz. He came into music prominence in 2004 for producing Kelly Clarkson's single "Since U Been Gone" with Swedish record producer Max Martin.

Dr. Luke continued to co-write and produce commercially successful records such as "Who Knew" (2006) for Pink, "Girlfriend" (2007) for Avril Lavigne, and "I Kissed a Girl" (2008) for Katy Perry, before leaving Saturday Night Live and reuniting with Clarkson for "My Life Would Suck Without You" (2009).