Wex is a collaboratively-edited legal dictionary and encyclopedia.
Wex or WEX may also refer to:
WEX Inc., a provider of payment processing and information management services County Wexford, the Chapman code WEX Wechselapparat, a World War I German flamethrower
People with the surname Michael Wex, Canadian author Bernard Wex, English civil engineer Helga Wex (1924–1986), German politician Marianne Wex, German feminist artist, author, and self-healer