Zavoy Nunatak (Bulgarian: нунатак Завой, ‘Nunatak Zavoy’ \'nu-na-tak za-'voy\) is the mostly ice-free rocky ridge extending 2.8 km in north-northwest to south-southeast direction and 1.4 km wide, rising to 920 m[1] on the west side of Elgar Uplands in northern Alexander Island, Antarctica. It surmounts Nichols Snowfield to the northwest, Gilbert Glacier to the southwest, and the head of Bartók Glacier to the southeast. The vicinity was visited on 30 January 1988 by the geological survey team of Christo Pimpirev and Borislav Kamenov (First Bulgarian Antarctic Expedition), and Philip Nell and Peter Marquis (British Antarctic Survey).
The feature is named after the settlement of Zavoy in Southeastern Bulgaria.
The ridge is located at -69.6629°N -71.1103°W, which is 7.57 km north of Appalachia Nunataks, 15.38 km east of Mount Morley in Lassus Mountains, 14 km south-southeast of Shaw Nunatak, 9.42 km south-southwest of Tegra Nunatak and 7.52 km west-northwest of Kozhuh Peak.