William Norris King (December 3, 1890 – July 1, 1937) was an American rugby union player who played in the back row for the United States men's national team in its first two capped matches in 1912 and 1913.

[4][5] On November 16, 1912, King played for the United States at flanker in its first capped match against Australia—a 12–8 loss.

[6] On November 15, 1913, King returned to the United States team, playing at number eight against New Zealand—a 51–3 defeat.

[7] By August 1914, King had withdrawn from the University of California and was consequently no longer a member of the rugby team.

[8] After attending the University of California and playing for the United States team, King became a rancher.