Magnolia is a large peninsular neighborhood in Seattle, Washington, connected to the rest of the city by only three bridges over the tracks of the Burlington Northern Santa Fe Railway: W. Emerson Place in the north, W. Dravus Street in the center, and W. Garfield Street (the Magnolia Bridge) in the south. It has been a part of the city since 1891. A good portion of the peninsula is taken up by Discovery Park, formerly the U.S. Army's Fort Lawton.

Magnolia is bounded on the north by Salmon Bay and Shilshole Bay of the Lake Washington Ship Canal, across which is Ballard; on the west by Puget Sound and Elliott Bay; on the south by Elliott Bay and Smith Cove; and on the east by Thorndyke, 20th, and Gilman Avenues W., beyond which is Interbay.