Sportster may refer to several things, such as:
Harley-Davidson Sportster, a line of motorcycles manufactured since 1957. ADI Sportster aircraft Sportster line of modems, manufactured by USRobotics a term used in Britain to describe 18th- and early 19th-century wealthy men of leisure who frequented sporting events such as horse-racing Theiss Sportster, an American biplane aircraft design of the 1990s. Warner Sportster, American light-sport aircraft