NL can stand for:

• the complexity class NL of languages which can be decided by a nondeterministic Turing machine in logarithmic space
• Netherlands (ISO 3166-1 alpha-2 country code)
• Dutch language (ISO 639 alpha-2)
• National League
• Newfoundland and Labrador (Canada Post provincial abbreviation)
• New Line (film production studio)
• No liability