The White Knife is a major river in the North.

Its source is the Long Lake and it has only two tributaries. An unnamed stream in the mountains east of Long Lake and North-West of Dreadfort. The second is an unnamed river whose source is located in the Wolfswood, and which runs through the Kingsroad, south of Winterfell, eventually joining the White Knife. its course then leds to White Harbor where it joins the sea at the Bite.