Dealer

Antiques dealer, someone who sells Antiques

Broker-dealer, a legal term for a business firm that buys and sells securities before selling the securities to customers

Croupier or poker dealer, the player who deals cards, or the employee of a gaming establishment who deals the cards

Dealer (franchising), a person who sells on behalf of a company or organization, particularly in the automobile industry

Car dealership

Drug dealer, someone who sells illegal drugs

Dealer (band), an Austrian hard rock band

An alternative usage of the term trader, being generally someone who trades

"Dealer", a song by Deep Purple from their 1975 album Come Taste the Band

Dealers (film), a 1989 British film