Cusher River is a river in County Armagh, Northern Ireland. It is formed by the junction, near Mountnorris, of two small streams (the Creggan and the Blackwater), flows by Tandragee, and joins the River Bann one mile above Portadown.
A short distance south of Portadown is the start of the Newry Canal inland navigation. Here the canal is between two rivers: the Cusher River and the Upper River Bann. The Cusher River supplemented water to the lower part of the system. The Point of Whitecoat is where three waterways meet: the Bann, the Cusher River and the Newry Canal, the first inland canal in the British Isles.
In the 19th century there were extensine flax mills, as well as flour, oat and corn meal mills on the Cusher River in the Tandragee area.
- "Armagh - Atlas and Cyclopedia of Ireland (1900)". Library Ireland. Retrieved 27 February 2009.
- "The Newry Canal from Portadown to Newry". Inland Waterways Association of Ireland - Waterways Heritage. Retrieved 27 February 2009.
- "The Craigavon Trail". Discover Northern Ireland. Retrieved 27 February 2009.
- "The Davisons from Tandragee". Davisons website. Retrieved 27 February 2009.
- "Five years of fish kills and the causes behind them". Belfast Telegraph - 18 July 2008. Retrieved 27 February 2009.
- Geograph - Bridge over the River Cusher at Clare Photograph
- Geograph - Cusher River, Loughgilly Photograph