Jacobsen Valley (Bulgarian: долина Якобсен, ‘Dolina Jacobsen’ \do-li-'na 'ya-kob-sen\) is the shallow valley in Vinson Massif, Sentinel Range in Ellsworth Mountains, descending northwards from the summit of Antarctica Mount Vinson (4892 m). It is 3.5 km long and 1.2 km wide, and is bounded to the west by Branscomb Peak and Galicia Peak, and to the east by a minor ridge running between the east side of Mount Vinson to the south and Goodge Col to the north.