Máel Brigte, also known as Máel Brigte the Bucktoothed or Máel Brigte Tusk^[1] was a 9th-century Pictish nobleman, most probably a mormaer of Moray. He was responsible – in a bizarre posthumous incident – for the death of Earl Sigurd the Mighty of Orkney.

The site of the battle is unknown. However the saga states that Earl Sigurd built a stronghold in the south of Moray, then a much larger province than today^[3] and that he was buried in a mound on the banks of the River Oykel.^[2][4] Máel Brigte's power centre was probably in or near modern Inverness. In the 13th century a farm near Dornoch, now called Cyderhall is recorded as "Syvardhoch", meaning "Sigurd's mound".^[1] It is therefore possible that the battle was staged in Easter Ross somewhere between these two places.

The Orkneyinga Saga records few specific dates and was not written down until circa 1200, some three centuries after the events it recorded about Máel Brigte and Sigurd took place. However it is thought that Sigurd Eysteinsson (aka "the Mighty"), ruled from about 875–92^[5] so Máel Brigte's death may have taken place in the last quarter of the 9th century.^[6]

There is no other record of Máel Brigte's life. Although another of this name is described in the mid 11th century as being the father of the Mormaer Máel Coluim of Moray.^[7]