Zon is a village in the administrative district of Gmina Margonin, within Chodziez County, Greater Poland Voivodeship, in west-central Poland. It lies approximately south-east of Margonin, south-east of Chodziez, and north of the regional capital Poznan.

Zon may refer to:

• Zon (band), Canadian progressive rock band
• Zon Guitars, manufacturer of bass guitars
• NOS (Portuguese media company), former names ZON Multimédia and ZON Optimus
• Zon, Burkina Faso, town in northern Burkina Faso
• Zon, village in Poland

NOS is a Portuguese media holding company whose main assets include a satellite, cable operator, and ISP, a mobile phone operator, a movie distributor (NOS Audiovisuais) and a virtual carrier of mobile phone services. Its services include cable television, cable internet and VOIP. NOS (formerly PT Multimédia, ZON Multimédia and ZON Optimus) is the spun-off media arm of Portugal Telecom. NOS produces several premium channels for the TV platform, which include SportTV (joint-venture with Controlinveste) and TVCine. NOS Audiovisuais (formerly ZON Lusomundo) is also the home-video distributor of Walt Disney Pictures, Warner Bros., DreamWorks and Paramount Pictures releases in the Portuguese market, alongside of launching several independent and European titles.