NDL is a three letter initialism that may stand for:
Sports
- National Disability League, a multi-display sports tournament
- National Dodgeball League, U.S.
Transportation
- Nandyal railway station, Andhra Pradesh, India
- Needles (Amtrak station), Needles, California, USA
- North Dulwich railway station, London, England
- N'Délé Airport (IATA: NDL), Central African Republic
Other uses
- Ndl (trigraph), used in the Romanized Popular Alphabet to write Hmong
- Collège Notre-Dame-de-Lourdes, Longueuil, Quebec, Canada
- Ndolo dialect (ISO 639:ndl), a Bantu language spoken in the Democratic Republic of the Congo
- National Diet Library, the national library of Japan
- No Decompression Limit, the time interval that a scuba diver may theoretically spend at a given depth without having to perform any decompression stops
- Norddeutscher Lloyd (1858–1970), a German steamship company
- Norwegian Defence League, (politics, Norway) a Norwegian offshoot of the European Defence League
- Niko Defense League The name is an altered version of the English Defence League