The Teeswater is a breed of sheep from Teesdale, United Kingdom. It is a longwool breed of sheep, which produces a generally large-diameter fibre. The breed is raised primarily for meat.

The wool of the Teeswater should be fine, long-stapled with high lustre with each lock hanging free and with no tendency to felt. There should be no dark fibers in the fleece, which should be uniform in texture over the whole body. The Teeswater produces a kemp free fleece, a characteristic it passes on.