Kattertooq, meaning 'where there is much blue ice' in the Greenlandic language,[1]) is a fjord of the King Frederick VI Coast in the Sermersooq municipality, southeastern Greenland.

It is oriented in a NW/SE direction and has a tributary fjord branching eastwards 25 km from its mouth.

To the east it opens into the North Atlantic Ocean with Uiivaq island on the northern and the entrance of Sehested Fjord (Uummannap Kangertiva) and Griffenfeld Island on the southern side of its mouth.

[4] Uivaq is a Paleo-Eskimo archaeological site near the entrance to a sound on Kattertooq's northern coast.

This Greenland location article is a stub.