An arbiter or arbitrator is a person by whose decision the parties to a dispute agree to be bound in arbitration.
Arbiter may refer to:
Fiction
- Arbiter (Halo), a character in the Halo video game series
- Arbiter-class starships, Protoss support vessels in the StarCraft science-fiction series.
- Arbiter class starships, Starfleet battlecruiser in the Star Trek Online MMORPG.
- Arbiter, a demonic battleaxe used by Dante in the video game DmC: Devil May Cry.
- Arbiters, the beings from Death Parade that decide whether a soul gets reincarnated or sent into the void after death.
Other
- Discussion moderator
- Referee in sporting matches
- Arbiter (electronics), a component in electronic circuitry that allocates scarce resources
- Memory arbiter, a component that allocates memory
- Wavefront arbiter, a commercial memory arbiter optimized for high-speed operation
- Memory arbiter, a component that allocates memory
- ArbiterSports, a sports officiating software company owned by the NCAA
- HMS Arbiter (D31), an escort aircraft carrier in the Royal Navy of the United Kingdom
- International Arbiter, in chess a title conferred by FIDE to match referees
- Dickie Arbiter (born 1940), British television and radio commentator
- Petronius (27–66), Roman author and satirist known formally as Gaius Petronius Arbiter
- One of the names of the Hindu deity Hanuman
- Arbiter, the title of the leader of Jinsy Island in UK comedy series This is Jinsy
- Pagyda arbiter, a moth in the family Crambidae
- Arbiter (album)