Joseph Cunningham Harker (1855–1927) was a scene painter and theatrical designer in London. The Harker family were prominent in the theatre, including his actor father, William Pierpont Harker, and son Gordon Harker. Two of Joseph Harker's great-great-granddaughters, Susannah Harker and Caroline Harker, are British actresses. Harker was a scene painter for the Lyceum Theatre, London, which was managed by Bram Stoker, the author of Dracula. In that book, one of the leading characters (called Jonathan Harker) is named after Stoker's friend.