St. Martial's Abbey was a monastery in Limoges, France, founded in 848 and dissolved in 1791.
The buildings were razed at the beginning of the 19th century. The only remaining part is the 10th century crypt, which was rediscovered in 1960, and which contains the tomb of Saint Martial, the first bishop of Limoges, and that of Saint Valerie of Limoges, another, possibly legendary, early martyr.
The origins of the abbey lie in the graveyard outside the original Roman settlement of Augustoritum. This is the site of the Place de la République, at the commercial heart of modern Limoges. The cemetery was the reputed burial place of early Christian martyrs, including Saint Martial, the first bishop of Limoges. This evolved into a place of pilgrimage in Merovingian times. By the 6th century, according to Gregory of Tours, there was a funerary chapel above Saint Martial's tomb, in the care of a small community of clerics, who were recognised as a congregation of canons in the reign of the Carolingian ruler, Louis the Pious (814-840). This community became a Benedictine abbey in 848, under Charles the Bald. A mosaic above the tomb of Saint Martial dates from approximately this time, and is set in hard cement from an earlier period, indicating that the shrine was already well-established and of some antiquity by the time the abbey was founded.
The abbey grew in importance and elaboration, alongside the "City of the Castle". This was a major commercial centre, under the patronage of the abbot, and outside the boundaries and control of the Cathedral City, dominated by the bishop. The body of Saint Martial was, at some time in the late 9th century, taken from its sarcophagus and placed for a time in a golden shrine in the great new church which was built over the spot. Here it was a magnet for pilgrims on the Way of St. James, benefiting from the wider pilgrim traffic throughout Western Europe.