Iota (Ι, ι) is the ninth letter of the Greek alphabet.
Iota or IOTA may also refer to:
Letters and scripts Ɩ or Latin iota, a letter of the Latin alphabet Iota (Cyrillic) (Ꙇ, ꙇ), a letter of the Cyrillic alphabet used to transcribe Glagolitic
Science and technology Infrared Optical Telescope Array, a former stellar interferometer array Integrable Optics Test Accelerator, a storage ring and test facility at Fermilab Iota toxin, a type of pore-forming toxin that acts to destroy the actin cytoskeleton SARS-CoV-2 Iota variant, a variant of SARS-CoV-2, the virus that causes COVID-19 Imaginary unit (i), in the complex number system
Computing , a function generating a vector of every integer from 0 to -1 (index origin zero) in APL Iota and Jot, two esoteric programming languages IOTA (technology), a distributed ledger
Organizations International Ovarian Tumor Analysis trial and group, founded to develop standardized terminology Intra-European Organisation of Tax Administrations
Arts and entertainment Iota, a superhero in the comic book Heroes Colony Iota, a location in Xenoblade Chronicles 3 Iota (singer) (Sean Hape, born 1968), Australian singer and actor Iota, a syndicated newspaper comic strip by Mike Keefe and Tim Menees Iota, 2022 album by Lous and the Yakuza
Other uses Iota, Louisiana, a town in the US Iota (Italian ship), a vessel from the port of Naples, wrecked in December 1893 Islands on the air (IOTA), a list of islands maintained by the Radio Society of Great Britain Hurricane Iota, a late-season Category 4 Atlantic hurricane in 2020
See also Iota-carrageenan, a type of gelling carrageenan used in the food industry Iota-carrageenase, an enzyme Jota (disambiguation)