A Darter
- One who darts, or who throws darts; that which darts.
- Any member of the family Anhingidae, waterbirds with long necks. Synonym: snakebird (US)
- Any of various darting freshwater fish of the family Percidae, that are usually small and brightly coloured and are native to North America.
- Any of the similar South American (and Panamanian) freshwater fish in the characin family Crenuchidae
- (Britain) Any of the dragonflies in the genus *Sympetrum*Synonym: (US) meadowhawk
- Any of various hesperiid butterflies of the genera *Arrhenes* and *Telicota*.