William Cochran
William Cochran may refer to:
- William Cochran (artist), Scottish painter
- William Cochran (Nova Scotia politician), Irish-born merchant and political figure in Nova Scotia
- William Cochran (priest), Canadian clergyman and president of University of King's College
- William Cochran (physicist), British physicist
- William Cochran (Indiana politician), American politician and businessman
- William Cochran (tenor), American operatic tenor
- William D. Cochran, American football player
- , American astronomer
- William Gemmell Cochran, British-American statistician
- William Granville Cochran, American judge and politician
- William Thad Cochran, U.S. senator from Mississippi