Staffa, a name for Pillar Island, is an island of the Inner Hebrides in Argyll and Bute, Scotland. The Vikings gave it this name as its columnar basalt reminded them of their houses, which were built from vertically placed tree-logs. The island is entirely of volcanic origin. It lies about 10 kilometers (6.2 mi) west of the Isle of Mull. The area is 33 hectares (0.13 sq mi).

Among the prominent people who visited the island were Queen Victoria and Felix Mendelssohn, who later brought further fame to the island by writing  the island very beautiful and gave a name to its main sea cavern during the 18th and 19th centuries. The island came to prominence in the late 18th century after a visit by Hebrides Overture opus 26.