Joseph Hillstrom King (born 1972) is an American writer of fiction, writing under the pen name of Joe Hill.

Hill is the the second child of authors Stephen King and Tabitha King. His younger brother Owen King is also a writer. He has three children.

Hill's first book, the limited edition collection 20th Century Ghosts published in 2005 by PS Publishing, showcases fourteen of his short stories and won the Bram Stoker Award for Best Fiction Collection, together with the British Fantasy Award for Best Collection and Best Short Story for "Best New Horror". In October 2007, Hill's mainstream US and UK publishers reprinted 20th Century Ghosts, without the extras published in the 2005 slipcased versions, but including one new story.

Hill's first novel, Heart-Shaped Box, was published by William Morrow/HarperCollins on February 13, 2007 and by Victor Gollancz Ltd in UK in March 2007. Simultaneous to these two editions, a limited edition of Heart-Shaped Box was also released by Subterranean Press; it sold out several months prior to publication. The novel reached number 8 on the New York Times bestseller list on April 1, 2007.

His new novel Horns was published in 2010.

Hill chose to use an abbreviated form of his given name (a reference to executed labor leader Joe Hill, for whom he was named) in 1997, out of a desire to succeed based solely on his own merits instead of as the son of Stephen King. After achieving a degree of independent success, Hill publicly confirmed his identity in 2007 after an article the previous year in Variety broke his cover (although online speculation about Hill's family background had been appearing since 2005).