William Cochrane
William Cochrane is the name of:
- William Cochrane , Scottish MP
- William Arthur Cochrane, Canadian physician, pediatrician, academic, and medical executive
- William Avery Cochrane, American politician, soldier and teacher
- William Cochrane, 1st Earl of Dundonald, Earl of Dundonald
- William Cochrane, 3rd Earl of Dundonald, Earl of Dundonald
- William Cochrane, 5th Earl of Dundonald, Earl of Dundonald
- William Cochrane, 7th Earl of Dundonald, Earl of Dundonald
- William Cochrane, Lord Cochrane from Alexander Montgomerie, 9th Earl of Eglinton
- William J. Cochrane, British surveyor and philatelist who signed the Roll of Distinguished Philatelists in 1923