K12 may refer to: *
K–12 K–12 (spoken as "k twelve", "k through twelve", or "k to twelve"), from kindergarten to 12th grade, is an American expression that indicates the range of years of publicly supported primary and secondary education found in the United States, wh ...
, primary and secondary education in the United States, Canada, and Australia *
K12 (company) K12 Inc. is a for-profit education company that sells online schooling and curricula. K12 is an education management organization (EMO) that provides online education designed as an alternative to traditional "brick and mortar" education for pu ...
, an online education company *
K12 (mountain) K12 is the second highest peak in the Saltoro Mountains, a subrange of the Karakoram range in the Siachen region, in Ladakh. Its name comes from its designation given during the original survey of the Karakoram range. In 1984, an Indian army expedi ...

Science and mathematics

* ''E. coli'' K-12, a strain of ''Escherichia coli'' bacteria * Keratin 12, a protein * Coxeter–Todd lattice K12, a 12-dimensional lattice


* AMD K12, a CPU microarchitecture * Curtiss K-12, an aircraft engine * HMS K12, HMS ''K12'', a British submarine * HNLMS K XII a Dutch submarine * S&T Motiv K12, a machine gun * K-12, an obsolete process for Kodachrome photographic film * K12, a model of Nissan Micra#Third generation (2002–2010), Nissan Micra * 21 cm K 12 (E) German World War II railway gun * SHA-3, KangarooTwelve, a parallelizable hash function based on Keccak

Other uses

* K-12 (Kansas highway), a former highway in Kansas * "Sonata in A" (K. 12), a Violin Sonatas, KV 10-15 (Mozart), violin sonata by Mozart * A fictional ski slope in the film ''Better Off Dead (film), Better Off Dead'' * K-12 (album), ''K-12'', a studio album by Melanie Martinez and its accompanying K-12 (2019 film), film {{Letter-NumberCombDisambig