Aghavannagh (Irish: Achadh Mheánach, meaning 'hilly field')[2] is a small village and townland in south County Wicklow, Ireland.

It is located in the barony of Ballinacor South on the Military Road originally constructed between 1804 and 1809, in the wake of the 1798 rebellion.

[3] The village is situated near the base of the Lugnaquilla massif, the highest mountain in eastern Ireland, and within a few miles of Aughrim, Glenmalure and Tinahely to the east and south, and Kiltegan, Hacketstown and Baltinglass to the west.

[6] Aghavannagh Barracks, along with similar structures in Glencree, Laragh and Glenmalure,[7] was one of a series of barracks built along the route of the military road, to house British forces and give them access to the Wicklow Mountains where many 1798 rebels, such as Michael Dwyer,[8] sought refuge.

[9] The property came into the ownership of Charles Stewart Parnell's grandfather after the British War Office vacated it in 1825 because he was the ground landlord and was used by him as a hunting lodge.