Gastone de Murols (died 20 June 1172) was the sixth Grand Master[1] of the Knights Hospitaller from 1170 until his death in 1172.
He began as treasurer of the Order, a position he fulfilled following Géraud de Saint-André.
He occupied the post beginning 1163 –1167, a position he held until his election as Grand Master.
The dissidents sided with the authority of a certain Rostang, a character known only by his seal, dividing the Order for the first time.
This split was short-lived since the death of Gastone took place just two years later.