Uhtred mac Fergus (c. 1120 – 22 September 1174) was Lord of Galloway from 1161 to 1174, ruling jointly with his brother Gille Brigte (Gilbert).
They were sons of Fergus of Galloway; it was believed that they were half brothers, but Duncan of Carrick was addressed as cousin by the English King, as was Uchtred.
(The term "cousin" in address does not necessarily connote a family tie; it was used between even minor "kings" to suggest that sender and receiver were of mutually considerable rank).
When his father, Prince Fergus, died in 1161, Uchtred was made co-ruler of Galloway along with Gilla Brigte.
King William was captured, and the Galwegians rebelled, taking the opportunity to slaughter the Normans and English in their land.