New Mexico, in United States postal abbreviations

North Miami, a city in northern Miami-Dade County, Florida

Gene flow (when used is population genetics)

Neurofiber mitosis, a nerve disease, sometimes confused with neurofibromatosis

The similar symbol Nm³ stands for "normal cubic metres", a unit of volume (Normal in this context means at standard temperature and pressure), although it also stands for "newton cubic metres" in SI notation.

Namco Museum

Nuclear medicine, the use of radiopharmaceuticals in medical imaging

Nautical mile, a unit of length used for maritime and aviation purposes

"Non-metallic" power cable, widely used in electrical house wiring

Network marketing, a business model that combines direct marketing with franchising

North Miami High School, a high school located in North Miami, Florida

Northwestern Mutual, a life insurance and financial services company based in Milwaukee, Wisconsin

Newton metre (N m or N·m), a unit of torque

"Near mint", a quality grade in various forms of collecting, just below mint condition

nm (Unix), a computer program used as an aid for debugging

Neal Morse, an American multi-instrumentalist

the IATA airline designator for Air Madrid and Mount Cook Airline

nanometre, an SI unit of length, equal to 10^-9 m (a thousand-millionth of a metre)