Dysponent Mediów - nadawca telewizyjny lub radiowy, wydawca, właściciel portalu internetowego lub ich przedstawiciel uprawniony do emisji materiałów promocyjnych;
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...
ccccccccccccccccccccccccccccccccccccc
The term "media organization" means “a person or entity engaged in disseminating information to the general public through a newspaper, magazine, other publication, radio, television, cable television, or other medium of mass communication.” (2 USCS § 1602)
http://definitions.uslegal.com/m/media-organization/

--------------------------------------------------
Note added at 13 hrs (2016-01-26 11:21:13 GMT)
--------------------------------------------------

OPtion:
media outlet
A publication or broadcast program that provides news and feature stories to the public through various distribution channels. Media outlets include newspapers, magazines, radio, television, and the Internet.

https://en.wiktionary.org/wiki/media_outlet