8K

8K or 8k may stand for
* 8 K, the quantity 8 kelvins. [http://www.bipm.org/en/si/si_brochure/chapter2/2-1/kelvin.html]
*8000, a natural number.
*8K electric locomotive, an electric locomotive model in China bought from France.
*Form 8-K, a United States Securities and Exchange Commission form