Monnington on Wye is a village in western Herefordshire, England, located between Hereford and Hay-on-Wye.
It is joined with Brobury for civil parish purposes as Brobury with Monnington-on-Wye.
The church of St Mary's is a grade I listed building. 
Monnington Court includes a moot hall, completed before 1230.
Monnington is regarded as the possible location of Owain Glyndŵr's retirement, death and burial.
Coordinates: 52°05′35″N 2°56′24″W / 52.093°N 2.940°W