Triple J is an Australian national radio station operated by the Australian Broadcasting Corporation (ABC). Founded in 1975, it began as 2JJ in Sydney before expanding nationwide and rebranding as Triple J in 1980. The station targets listeners aged 18-24 with alternative and independent music programming, focusing heavily on Australian content.

Triple J is known for championing emerging local artists through initiatives like Unearthed and for hosting major events like the annual Hottest 100 countdown. Its programming includes music shows across various genres, news and current affairs aimed at young Australians, live music recordings, and comedy segments.

Beyond radio, Triple J has expanded into digital platforms, live events, and briefly into television programming. It operates sister stations Double J and Triple J Unearthed. Despite being government-funded, Triple J maintains an edgy, youth-oriented brand identity and continues to play a significant role in Australia's music and youth culture landscape.