Robert Lockyer (sometimes spelled Lockier) (1625 – 27 April 1649) was an English soldier in Oliver Cromwell's New Model Army.
He served in the regiment of Edward Whalley during the turmoil at the end of the decade; by this time he was already deeply committed to Leveller ideas.
On 27 April, despite efforts by John Lilburne and Richard Overton to spare his life, Lockyer was executed by firing squad in the yard of St Paul's Cathedral.
[3] His funeral procession was reportedly attended by more than four thousand people, many wearing green ribbons to signal their allegiance to Leveller ideas.
The affair crystallized popular discontent with Cromwell's martial law, and Lockyer's memory was invoked by the mutineers at Banbury later the same year.