Dr Fink (born Matthew Robert Fink, 8th February 1958) was Prince's keyboardist from 1978 to 1990. He was a member of the Revolution.
He joined Prince's band after the release of For You, and made his first studio appearance on Dirty Mind. He toured and recorded with Prince throughout the 1980s, including appearances on the Purple Rain album and film. He stayed with Prince after the Revolution broke up in 1986, leaving his band after the Nude tour. As well as performing with Prince, Dr Fink co-wrote several songs, including Dirty Mind, 17 Days and It's Gonna Be A Beautiful Night.