Generator may refer to:

• Signal generator, electronic devices that generate repeating or non-repeating electronic signals
• Electric generator, a device that converts mechanical energy to electrical energy.
• Tidal stream generator, a machine that extracts energy from moving masses of water
• Generator (circuit theory), an element in an abstract circuit providing a source of electricity
• Engine-generator, an electric generator with its own engine
• Wearable generator, a hypothetical generator that can be worn on the human body
• Gas generator a device, often similar to a solid rocket or a liquid rocket that burns to produce large volumes of relatively cool gas
• Motor–generator, a device for converting electrical power to another form
• Atmospheric water generator, a device capable of extracting water from air

• Generator (mathematics)
• Generator matrix, a matrix used in coding theory
• Generator (category theory) of a category, in category mathematics
• Generating set of a group, group generators in abstract algebra
• Infinitesimal generator (stochastic processes), in stochastic analysis

• Application generator, software that generates application programs from descriptions of the problem rather than by traditional programming
• Generator (computer programming), a routine that acts like an iterator
• Pseudorandom number generator, a producer of random numbers
• Code generator, part of a compiler
• Natural-language generator, generating natural language from a machine representation system such as a knowledge base or a logical form
• Random test generator, used in software testing

• The Generators, a 1997 punk rock band from Los Angeles
• Kix (band), an American glam metal band also known as The Generators
• Generator (Bad Religion album), and the album's opening track
• Generator (Aborym album), the fourth studio album by the Italian/Norwegian industrial black metal band Aborym
• "Generator" (Foo Fighters song), 2000
• "Generator" (The Holloways song), 2006
• "Generator", a 2015 song by Doomtree from All Hands
• "Generator", a 1995 song by Elastica from The Menace
• "Generator", a 2007 song by Minipop from A New Hope
• "Generator", a 2017 song by Turnstile from Time & Space
• "Generator", a 2024 song by Justice from their album, Hyperdrama

• Tuning generator

• Generator Collective, American campaign group

• Gener8tor, an American venture capital firm
• Generation (disambiguation)
• Generate (disambiguation)
• Regenerative heat exchanger