NCIS or N.C.I.S. may refer to:
==Law enforcement== National Criminal Intelligence Service, the predecessor to the Serious Organised Crime Agency of the United Kingdom Naval Criminal Investigative Service, a United States law enforcement and intelligence agency that primarily investigates crimes in the U.S. Navy and Marine Corps National Criminal Investigation Service (Kripos), a special agency of the Norwegian Police Service
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).