NDA, nda, or Nda may refer to:
==Military== National Defence Academy (disambiguation) National Defence Act, the primary law establishing the Canadian Armed Forces National Defense Area, a military installation at the Mexico–United States border operated by the U.S. Government Naval Defence Act (disambiguation) Niger Delta Avengers, a militant group in Nigeria's Niger Delta Nigerian Defence Academy, a military academy in Nigeria National Defense Academy, an armed forces training academy in India Northern Domestic Airspace, a Canadian aviation organization
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).