Martha Wash (born December 28, 1953) is a two time Grammy nominated American R&B, pop, soul, and house singer and songwriter with a career spanning over thirty years. Known for her distinctive and powerful dramatic soprano voice., Wash first achieved fame as one half of the successful act Two Tons O' Fun who sang backing for the often dubbed Queen of Disco Sylvester. After gaining their own record deal, they released three consecutive commercially successful songs which all peaked at number 2 in the dance charts. The duo was renamed The Weather Girls in 1982 when they released the multi platinum single "It's Raining Men" in 1982 which brought the band to mainstream pop attention. After the disbanding in 1985 Wash subsequently made a successful transition into House music as a featured artist on several successful songs. This has led her being branded as The Queen of Clubland with six Dance songs peaking at number one on the American Billboard Charts and a further four Dance songs peaking at number two, her most recent being the 2014 Tony Moran radio edit of "I'm Not Coming Down."

Wash is also noted for spurring legislation in the 1990s that made vocal credits mandatory on CDs and music videos after being denied proper credit (and royalties) for the million selling #1 song "Gonna Make You Sweat (Everybody Dance Now)" after she had been labeled "unmarketable" due to her weight.