William Johnson (1924 – 23 September 2016) was an actor from New Zealand who is best known to American audiences as portraying "Mr. Wilberforce" in the 1979 series Under the Mountain. Johnson would also appear in a cameo as "Mr. Carpenter" in the 2009 Under the Mountain film remake.
Johnson was born in Auckland, New Zealand, in 1924. He began his career in the 1960s making films for the company Kiwi Screens. After four decades of acting, Bill Johnson died at the age of 92 on 23 September 2016.