Third party

Third party may refer to:

Business

 * Third-party source, a supplier company not owned by the buyer or seller
 * Third-party beneficiary, a person who could sue on a contract, despite not being an active party
 * Third-party insurance, such as a vehicle insurance

Politics

 * Third party (politics), any party contending for votes that failed to outpoll either of its two strongest rivals
 * Third party (U.S. politics), a US political term for parties other than the Democrats or Republicans
 * Third party (SIPO), in Ireland, those who receive political donations but do not run for election

Arts and entertainment

 * 3rd Party, a 1990s American music group
 * Third Party (album), by Blue Sky Black Death and Alexander Chen, 2010
 * Third Party (DJs), a British DJ duo
 * The Third Party, a 2016 Filipino romantic comedy drama film
 * The Third Party (album), a 1989 album by Jules Shear
 * The Third Party (webtoon), a thriller romance webtoon

Computing

 * Third-party software component