Oronsay commonly refers to the island of Oronsay, Colonsay in the Inner Hebrides, Scotland.

Oronsay may also refer to

Scottish islands Oronsay, Loch Bracadale, Skye Oronsay, Loch Sunart Oronsay, Outer Hebrides, off North Uist

Ships List of ships named Oronsay

See also List of islands called Oronsay, including similarly named islands