Sea Dragon is a horizontally scrolling shooter for the TRS-80 computer written by Wayne Westmoreland and Terry Gilman and released in 1982 by Adventure International.

The gameplay involves navigating "past underwater mountains and through labyrinthine passages while avoiding webs of explosive mines that rise from the sea bottom.

Additional dangers include mine-dropping ships, enemy attack stations, falling stalactites, and deadly lasers—any of which could keep you from your ultimate goal: destruction of the incredibly powerful nuclear reactor at the end of the undersea course."

Programming Sea Dragon to play back an audio sample is a technical achievement shared with Castle Wolfenstein (1981), Dung Beetles (1982), Creepy Corridors (1982), and Plasmania (1982).

Writing for Video magazine in 1983, Ivan Berger noted that Sea Dragon's graphics were dominated by "simple patterns and primary colors".