FM4 is an Austrian national radio station operated by ORF, targeting a young audience with alternative rock and electronic music. Launched in 1995, FM4 broadcasts in both English and German, making it unique among Austrian radio stations. The station describes its music format as "alternative mainstream," covering genres like rock, electronic, hip-hop, and indie.

FM4's programming features a high level of spoken word content, with morning shows like "Reality Check" and "Update" broadcast in English, while afternoon programs are in German. The station is known for identifying and supporting Austrian artists, providing a platform for emerging talent.

Beyond radio, FM4 has expanded its presence with an active website, music festivals like the FM4 Frequency Festival, and compilation albums. The FM4 Soundpark, launched in 2001, offers an online platform for young musicians to publish their work for free.

With its bilingual broadcasts and focus on alternative music and culture, FM4 has cultivated a dedicated listener base both within Austria and internationally, particularly in neighboring Bavaria.