Daniel David Kirwan (13 May 1950 – 8 June 2018) was a British musician whose greatest success came with his role as guitarist, singer and songwriter with the blues rock band Fleetwood Mac between 1968 and 1972. He released three albums as a solo artist from 1975 to 1979, recorded albums with Otis Spann, Chris Youlden, and Tramp, and worked with his former Fleetwood Mac colleagues Jeremy Spencer and Christine McVie on some of their solo projects.
He is also known as Daniel David Kirwan.
Kirwan died on 8 June 2018. In a statement posted on Facebook, Mick Fleetwood said, "Danny’s true legacy, in my mind, will forever live on in the music he wrote and played so beautifully as a part of the foundation of Fleetwood Mac, that has now endured for over fifty years. Thank you, Danny Kirwan. You will forever be missed!" An obituary in The New York Times noted that Kirwan's former wife Clare Morris said he died in his sleep "after contracting pneumonia earlier this year and never fully recovering from it."