Glenroy River
Route of the Glenroy River
Mouth of the Glenroy River Show map of South Island Glenroy River (New Zealand) Show map of New Zealand
Location
Country	New Zealand
District	Tasman
Physical characteristics
Source	Glenroy River (main branch)
• location	Spenser Mountains
• coordinates	42°18′01″S 172°26′00″E / 42.3002°S 172.4333°E / -42.3002; 172.4333
2nd source	Glenroy River East Branch
• coordinates	42°05′12″S 172°24′21″E / 42.0867°S 172.4059°E / -42.0867; 172.4059
Mouth	Mātakitaki River
• coordinates	42°00′04″S 172°20′05″E / 42.001°S 172.3347°E / -42.001; 172.3347
Basin features
Progression	Glenroy River → Mātakitaki River → Buller River → Tasman Sea
River system	Buller River
Tributaries
• left	Mount Cann Creek, Granity Creek
• right	Branch Creek, Pedro Creek, Shale Creek, Cascade Creek, Davis Creek

The Glenroy River is a tributary of the Mātakitaki River in the north of the South Island of New Zealand. It is widely known as a short class 4 river (River difficulty classification system for rafting).