Sea Dragon may mean:
- Either of two fishes in the sea horse family:
- Leafy sea dragon (Phycodurus eques)
- Weedy sea dragon (Phyllopteryx taeniolatus)
- Sea Dragon (rocket), the name for a giant rocket proposed by Aerojet in the 1960s but never built
- Sea monster, legendary creatures, sometimes associated with dragons
- Sea Dragon (computer game), a computer game from 1982
- Sea-dragon, a fictional marine animal in Robert Silverberg's Majipoor series
- Sea Dragon Offshore, a deep water oil exploration company.
In military:
- MH-53E Sea Dragon, the largest and heaviest helicopters in the United States military
- USS Seadragon, one of two United States Navy ships
- Operation Sea Dragon, one of two US military operations during the Vietnam War
- Kairyu class submarine (海龍 "Sea Dragon"), a class of Japanese kamikaze midget submarines used during World War II
- a 1990's United States Marine Corps program to advance Marine warfare
In computers:
- Seadragon (Computer Program), a zoomable UI created by Blaise Aguera y Arcas and currently developed by Microsoft. [1]
