Brendan Kavanagh (born 1967), also known as "Dr K", is a contemporary British pianist and piano teacher of Irish descent. He specializes in playing and promoting the boogie-woogie genre, almost exclusively improvised, often combined with classical, jazz, blues, rock & roll, and traditional Irish music themes. He regularly performs in open venues on public pianos, sometimes in duet formats with musically inclined passersby or friends. He also plays the piano accordion, with emphasis on traditional Irish tunes.