Lankum are a contemporary Irish folk music group from Dublin, consisting of multi-instrumentalists Ian Lynch, Daragh Lynch, Cormac MacDiarmada and Radie Peat.

Originally a duo consisting of the Lynch brothers, known as Lynched, the pair released their debut album, Where Did We Go Wrong?! in 2003. Returning to Ireland, after a spell of international touring, the brothers deepened their interest in Dublin's Irish traditional music sessions which introduced them to vocalist and multi-instrumentalist Radie Peat and violinist Cormac MacDiarmada.

Recording as the core four-piece band, they released the albums Cold Old Fire in 2014 and Between the Earth and Sky in 2017. In 2018, they were named Best Folk Group at the RTÉ Folk Music Awards, while Radie Peat was named Best Folk Singer. The band were nominated for the RTÉ Choice Music Prize Irish Album of the Year in 2017 for their album Between the Earth and Sky, and won the prize in 2019 and 2024 for their albums The Livelong Day and False Lankum.

The band's fourth studio album, False Lankum (2023), was released to widespread critical acclaim and increased the band's exposure significantly. It was nominated for the Mercury Prize and placed highly on several end-of-year lists. In 2024 the band released a live album Live in Dublin, recorded across three sold out nights at Dublin's Vicar Street.