Agent (law), a person authorized to act on behalf of another to create a legal relationship with a third party
- Agent of record, representing an insured party in the purchase and maintenance of insurance coverage
- Election agent, party responsible for the conduct of a political campaign (UK)
- Free agent, sports player whose contract with a team has expired
- Press agent, or publicist
- Talent agent or booking agent, finds jobs for actors, musicians, etc. in entertainment businesses
- Art agent, representing artists
- Literary agent, representing writers to publishers and theatrical and film producers
- Sports agent, negotiates employment and endorsement deals for a player or coach
- Foreign agent, represents the interests of foreign powers
- Political Agent (Political Resident), an official diplomatic position in British Empire
- Patent agent or patent attorney, represents clients in obtaining patents
- Real estate agent or real estate broker, an intermediary between sellers and buyers of real estate
- Registered agent, in the US, receives service of process for a party in a legal action
- Travel agent, works on behalf of a travel agency
- Tuition agent, introduces tutors to students (see tuition agency)
- Yacht agent or yacht broker, acts as a representative for the sale of a yacht or boat
