title: William Penney (disambiguation)
text: # William Penney (disambiguation)
  
  William Penney, Baron Penney (1909–1991) was an English mathematician.
  
  William Penney may also refer to:
  
  * William Penney, Lord Kinloch (1801–1872), Scottish judge
  * William F. Penney (1862–1934), Newfoundland judge and politician
  