[1] Administratively it belongs to the Avannaata municipality.

Hannah Island was named after Hannah (Tookoolito), an Inuk guide who accompanied Charles Francis Hall in the 1871 Polaris expedition.

[2][3] Hannah Island lies in the mouth of Bessel Fjord and northeast of Cape Bryan by the Kennedy Channel.

The island consists of a huge mound of pebbles and drift, probably the deposit of an ancient glacier.

[4] Lichens and lichenicolous fungi grow on the island.