NLX
# NLX

NLX may refer to:

* ISO 639-3 code for the Kalto language
* nanolux, an SI unit of illumination equal to $10^{−9}$ lux
* NLX (motherboard form factor), a form factor standard for low profile retail PCs
* NLX LLC, a software company acquired by Rockwell Collins in 2003
* Nonlinear X-wave, a multi-dimensional wave that can travel without distortion
* Northern Lights Express, a proposed passenger rail service between Minneapolis and Duluth, Minnesota
* Railroad reporting mark for Allied Corporation from 1963 - 1985
