Gulladuff (from Irish: Guala Dhubh, meaning "black shoulders") is a small village and townland in County Londonderry, Northern Ireland. In the 2001 Census it had a population of 405 people. It is situated within Mid-Ulster District.
Gulladuff is home to a Mid-Ulster Sinn Féin Centre, an Irish republican garden of remembrance and Lavey GAC grounds.
Coordinates: 54°50′N 6°36′W / 54.833°N 6.600°W