What is the name of the last island discovered?

The last island to be officially discovered is often considered to be "Bishop Rock," part of the Isles of Scilly in the United Kingdom, which was fully charted in the late 19th century. However, in terms of uncharted lands, it’s difficult to pinpoint a specific "last island" since many small islands and atolls continue to be identified through exploration and advances in technology. The discovery of new islands can also occur due to natural events like volcanic eruptions or rising sea levels.