Tanglefoot Seaplane Base (FAA LID: D28) is a privately owned, public-use seaplane base in Bonner County, Idaho, United States.

[1] It is located at Priest Lake, on west shore of Cavanaugh Bay.

[2] Tanglefoot Seaplane Base covers an area of 15 acres (6.1 ha) at an elevation of 2,438 feet (743 m) above mean sea level.

It has one landing area (15/33) measuring 10,000 x 2,000 feet (3,048 x 610 m).

For the 12-month period ending May 21, 2007, the airport had 175 general aviation aircraft operations.