S12 may refer to:
== Aviation == Albany Municipal Airport (Oregon), in Linn County, Oregon, United States Letov Š-12, a Czechoslovak prototype fighter aircraft Rans S-12 Airaile, an American civil utility aircraft SABCA S.XII, a Belgian passenger aircraft SIAI S.12, an Italian flying-boat Sikorsky S-12, a Russian trainer aircraft SPAD S.XII, a French biplane fighter Spencer S-12 Air Car, an American amphibious aircraft Stemme S12, a German motor glider
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).