Oliver Cromwell usually refers to Oliver Cromwell, 1599–1658, the Lord Protector of England, Scotland and Ireland

It may also refer to:

• Oliver Cromwell (song), a Monty Python song about the above
• BR standard class 7 70013 Oliver Cromwell, a locomotive named after the above
• James Cromwell, real name Oliver Cromwell, actor
• Oliver Cromwell, African American Revolutionary War soldier, 1752-1853, accompanied General George Washington across the Delaware River

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.