Trader may refer to:
- Merchant, retailer or one who attempts to generally buy wholesale and sell later at a profit
- The owner of a trading post, where manufactured goods were exchanged with native peoples for furs and hides.
- Trader (finance), someone who buys and sells financial instruments such as stocks, bonds, derivatives, etc.
- Trader Classified Media, classified advertisement company
- Trader Media East, largest classified advertising company in Central and Eastern Europe
- Trader (comics), the name of two separate fictional characters in the Marvel Comics universe
- "The Trader", a song by The Beach Boys from their album Holland
- A merchant vessel, a boat or ship that transports cargo or carries passengers for hire. This excludes pleasure craft that do not carry passengers for hire and warships
- Grumman C-1 Trader, a piston, carrier born cargo plane.
