Saga may refer to:

Old Norse

• Saga, stories in Old Norse about ancient Scandinavian and Germanic history, etc.
• Icelanders' sagas, prose histories mostly describing events that took place during and following the Age of Settlement
• Sága, a goddess in Norse mythology.

Japan

• Saga Prefecture, a prefecture of Japan
• Saga, Saga, the capital of Saga Prefecture
• Saga (Kyoto district), a district in Kyoto
• Emperor Saga (786–842), ruler of Japan from 809 to 823
• Nabeshima clan, also known as the Saga family, a clan of Japanese nobles
• Saga (gunboat), a gunboat

In computer science

• SAGA, a Simple API for Grid Applications
• Saga can also refer to a long-running transaction

In contemporary culture

• Saga (alice nine), bassist of Visual Kei band Alice Nine
• Saga (UK), a UK-based organisation for senior citizens
• Saga (band), a Canadian rock band
• Saga (food), an Indian dish of fried leafy vegetables
• Saga (music), a chamber concerto inspired by the Icelandic Eddic lays composed by Ezequiel Viñao
• Saga (novel) by Erico Verissimo
• Saga (singer), a Swedish female Neo-Nazi singer
• SAGA (standart) - German Standards and Architectures for E-Government Applications (Standards und Architekturen für E-Government)
• Saga (tree), a South East Asian tree which produces hard red seeds
• Urza's Saga, from Magic: The Gathering
• Proton Saga, the first car produced by Malaysian auto manufacturer Proton
• SaGa, a video game franchise
• Saga (2008 video game), an upcoming MMORTS from Silverlode Interactive
• Saga Musical Instruments, a manufacturer and wholesale distributor of stringed instruments
• Saga DAB radio, a British radio station
• SAGA, a game engine
• 1163 Saga, an asteroid
• SAGA System, a role-playing game system
• Saga, the antagonist of the Fifth movie of the anime One Piece by Eiichiro Oda
• Gemini Saga, one of the twelve legendary Gold Knights in Saint Seiya, created by Masami Kuramada
• Saga (novel), a book by Conor Kostick

In business

• Saga Falabella, a department store chain in Peru
• Saga Group, for people over 50
• Saga Petroleum LLC
• Saga Petroleum, acquired by Norsk Hydro in 1999

In biology

• Abrus precatorius, or Saga, a leguminous tree
• Saga ephippigera, a type of grasshopper

Others

• Saga County, county in Tibet
• Saga cheese, a blue cheese
• The Sexuality and Gender Alliance of Haverford College
• Kamen Rider Saga, the third Rider from Kamen Rider Kiva