Humpback Oak was a Singaporean band formed in 1990-1991 that achieved popularity in 1994 with the release of their debut album Pain-Stained Morning. Featuring the standout tracks "Fear", "Finer Life", "Circling Square" and "Lower Girl", the album garnered considerable attention and popularity in South-East Asia, and they won both Favourite Local Act and Critic's Choice awards in Singapore's Perfect 10 Music Awards in 1995.

Humpback Oak was considered part of the explosion of bands in the late 1980s and early 1990s such as The Oddfellows, The Padres, Concave Scream, Livonia and Stompin' Ground that brought the Singapore local indie and alternative music scene to the forefront, and were the subject of subsequent discussion in the Singapore media, articles and books regarding the English music scene revival. In 1997, the band returned with Ghostfather, a more introspective, melancholy album. A third album SideASideB followed in 1999, and a few years after, the band faded from view.

The band recently returned and released a limited-edition compilation boxset called Oaksongs on 27 Feb 2010. The box set contained the band's three studio albums and previously unreleased rarities.