Kappa (Κ or κ) is the tenth letter of the Greek alphabet. __NOTOC__ Kappa may also refer to: __NOTOC__

Measurement Cohen's kappa, also known as Kappa statistic Fleiss' kappa, another measure of inter-annotator agreement Kappa number, a measure of lignin content in wood pulp

Informatics Kappa architecture, a purely streaming architecture, as opposed to lambda which uses the same architecture for batch and streaming

Companies Kappa (brand), an Italian sportswear brand Kappa Publishing Group, publishing company

Automotive GM Kappa platform, subcompact rear-wheel drive automobile platform Lancia Kappa, an executive car Hyundai Kappa engine, automobile engine series

Places Kappa, Illinois, a village Kappa Island, Antarctic island

Other uses Kappa (folklore), a Japanese turtle-like humanoid Kappa (novella), by Ryūnosuke Akutagawa Kappa (Dungeons & Dragons), a game creature Death Kappa, a Japanese kaiju film Kappa (rocket), a family of Japanese sounding rockets Kappa TV, a TV channel based in Kerala Knowledge and Power Preparatory Academy IV or KAPPA IV, a middle school in the Bronx, New York City "Kappa", a 1999 song by Mogwai from the album Come On Die Young Kappa chain, a type of immunoglobulin light chain, part of the human immune system Kappa, one of the most popular emotes on live streaming platform Twitch Kappa effect, a sensory illusion relating to the human perception of time SARS-CoV-2 Kappa variant, one of the variants of SARS-CoV-2, the virus that causes COVID-19

See also Honda Capa, a car sold in Japan Kalpa (aeon) Kapa (disambiguation) κ-opioid receptor Kappaphycus alvarezii, a type of seaweed