Sumer Passage (Bulgarian: проток Сумер, ‘Protok Sumer’ \'pro-tok su-'mer\) is the 970 m wide passage in the Palmer Archipelago between Davis Island on the north and Albena Peninsula, Brabant Island on the south. It connects Bouquet Bay and Gerlache Strait, another connection between the two being Zlogosh Passage.
The passage is named after the settlement of Sumer in Northwestern Bulgaria.
Sumer Passage is located at -64.1144°N -62.1139°W. British mapping in 1978.