Seeadler (German for White-tailed eagle, resp. the Genus Haliaeetus) may refer to:
Vessels DFS Seeadler, German flying boat sailplane , patrol vessel of the Papua New Guinean Maritime Component , German cruiser , German merchant raider
Other uses Seeadler Harbor, a harbor on Manus Island, Papua New Guinea
See also Seeadler-class fast attack craft