Tunulliarfik fjord, Coastal fjord in Kujalleq, Greenland.

Tunulliarfik is the inner section of Skovfjord in southern Greenland, formed at its head by a river flowing from a glacial outflow lake in Johan Dahl Land. South of Narsarsuaq it is joined by Qooroq Fjord from the northeast and turns southwest, running between long peninsulas and low-lying islands to its mouth in Skovfjord.

The fjord was formerly known as Eriksfjord and played an important role during medieval Norse settlement in Greenland. The waterways supported navigation and helped settlers establish communities in this Arctic region.

The fjord's Norse name, Eiriksfjord, recalls Erik the Red, who settled in southern Greenland during the medieval Eastern Settlement. Today the shores hold the settlements of Narsarsuaq, Qassiarsuk, Igaliku and Narsaq, and Igaliku occupies the isthmus of a peninsula on the fjord's south side. Narsaq, at the head of the Narsaq Peninsula, stands on a wide lowland with arable ground.

The fjord is accessible by ferry services that operate between settlements from spring through autumn. Year-round access to the region is available through Narsarsuaq Airport for visitors.

Where Qooroq Fjord meets this waterway, seasonal ice patterns emerge from glacial discharge. The interaction of glacial water and ocean currents creates constantly shifting water conditions.