"Weir" is a song by Australian rock band Killing Heidi, released in May 1999 as the first single from their debut studio album, Reflector (2000). The song became a teen anthem in Australia the year of its release, reaching number six on the ARIA Singles Chart, and remains the band's best-known single. In the United States, the song was released to alternative radio on 25 July 2000. The music video was partially filmed in Sydney's Centennial Park. In 2025, the song placed 77 on the Triple J Hottest 100 of Australian Songs.[2]