John S.S. Graham (1915 in Belfast, Ireland – 29 December 1997) was an important Irish Republican Army (IRA) activist in the 1940s.
He was a member of a Protestant group (including George Gilmore and George Plant) who joined the IRA, and for a time in the 1940s they formed a company of the IRA in Belfast.
The strip strike began in mid June 1943 and was called off in early September.
The strike attracted little attention due to war time censorship.
As a member of the select vestry of St Mary's on the Crumlin Road in Belfast, Graham resisted the placing of an image of the Virgin Mary in the church.