| Active | 1650 to 1660 |
| Country | England |
| Allegiance | Parliamentarian |
| Conflicts | Third Civil War |
| Type | Foot |
| Colonel | Oliver Cromwell |
| Richard Cromwell | |
| Charles Fleetwood | |
| Thomas Fitch | |
| Thomas Sheffield | |
| Lord Ossory | |
| Area Raised | Lancashire |
| Coat Colour | Red? |
| Flag Colour | |
| Flag Design | |
| Field Armies | Cromwell 1650 |
Later Richard Cromwell’s, Charles Fleetwood’s, Colonel Thomas Fitch’s, Thomas Sheffield’s and Lord Ossory’s Regiment of Foot
Commonwealth Regiment of Foot briefly serving in Scotland, captured the Isle of Man then remained in London
A history of the regiment is given in The Regimental History of Cromwell's Army by Sir Charles Firth and Godfrey Davies, Clarendon Press, Oxford, 1940.
Cromwell’s regiment was raised in Lancashire in 1650, marching directly to Scotland but arriving after the Battle of Dunbar. In 1651 they secured Manchester against the Earl of Derby and successfully invaded and captured the Isle of Man. Subsequently they were quartered at St James’ in London, notably being called in by Cromwell to expel ‘the Rump’ thus dissolving the Long Parliament.
After a number of changes of Colonel in line with the prevailing politics, they were moved to the West Country in 1660, where they disbanded in the October.
Presumably they were issued with red coats.
A younger son of Edmund, Lord Sheffield, Earl of Mulgrave, he served as Captain in his brother James’ regiment of horse in Essex’s army and was appointed Colonel of Colonel Thomas Sheffield’s Regiment of Horse when the regiment was New Modelled. Sheffield supported Parliament rather than the army in 1647 and so lost his command, then in 1660 was given command of Cromwell's old regiment of foot by Monck.
Thomas Butler, 6th Earl of Ossory was the son of James Butler, 1st Duke of Ormond.
Charles Worsley served as lieutenant-colonel from the regiment's formation until his sudden death in 1656. He was Major-General for Lancashire, Cheshire and Staffordshire during the Rule of the Major-Generals, noted for his zeal and severity.