Lee Hays (1914–1981) was an influential American folk singer and songwriter, best known as a founding member of the folk group the Weavers. His contributions to music spanned the genres of folk and traditional American music, with a focus on social justice themes. Hays's rich baritone voice and poignant lyrics were pivotal in popularizing folk music during the 1950s. Notable works include the Weavers' rendition of "Goodnight, Irene," which became a major hit in 1950, and other songs like "Tzena, Tzena, Tzena" and "If I Had a Hammer," co-written with Pete Seeger. The Weavers played a crucial role in bringing folk music into the mainstream, influencing subsequent generations of artists, including Bob Dylan and Joan Baez. Hays's impact extended beyond music; he was an activist involved in civil rights and labor movements, using his platform to advocate for social change. His legacy is marked by the blending of music with political activism, cementing his place in the history of American folk music and its role in social movements.