LOS40 (pronounced Los-O) is a Spanish media conglomerate that is primarily engaged in music and entertainment. The brand has a hefty presence in many Spanish speaking countries including Argentina, Costa Rica, Colombia and Chile. It also has a strong presence in Mexico.

LOS40 has more than 50 million listeners and is a radio network that airs English and Spanish contemporary hit music. It has a number of stations, each with its own unique programming. The station has also launched a mobile application which allows users to listen to live radio as well as podcasts and other exclusive content. LOS40 is also known for its Premios 40 Principales awards, which are held annually in Spain. The awards ceremony is hosted by the Los 40 Principales radio channel.

The LOS40 logo features a multicolor ribbon effect to represent a variety of cultural and societal groups. It also features the most notable LOS40 radio program.

The LOS40's website features an innovative page that lets listeners to listen to podcasts as well as confirm which 40 artists are the most prominent ones. The page also contains the most popular songs and videos played on the station. The station has also branched out to include a number of social networking websites.

The LOS40's new strategic vision is to become the global leader in audiovisual content and entertainment. It is also looking to expand into Latin America, where it currently has a strong presence. The new vision was revealed during a special ceremony in Madrid.