Flannan (disambiguation)

Flannan may refer to:


 * Flannán mac Toirrdelbaig, saint and patron of Killaloe
 * Flannan Isles, a small island group in the Outer Hebrides of Scotland
 * Flannan Isles Lighthouse, lighthouse on Eilean Mòr, one of the Flannan Isles
 * St Flannan's College, Irish secondary school
 * Flannan Isle, poem by Wilfrid Wilson Gibson