The Greencards are a bluegrass music band from Austin, Texas, that formed in 2003. The band is composed of two Australians—Kym Warner (mandolin) and Carol Young (bass)—and an Englishman, Eamon McLoughlin (fiddle).

According to the band, their music is described as "high energy acoustic music". They have to date released one independent album and two albums through Dualtone, a Nashville label. Their music has been called Celtic-influenced and bluegrass-flavored, but they have a distinctly American sound despite their overseas origins. The band has been nominated in the Americana Music Association Awards for 2006 in the category of New/Emerging Artist of the Year. In 2005, they toured extensively with Bob Dylan and Willie Nelson.

In 2004, the Austin Music Awards named them Best New Band. In 2005, Country Music Television named their album Weather and Water one of the ten favorite bluegrass albums of the year, saying, "At the nexus of bluegrass, country and pop, this charming trio immediately win over such diverse audiences in concert. Luckily, their winning personality translates to this disc—even with several melancholy, yet melodic, songs. Not for nothing did Bob Dylan and Willie Nelson choose them to open their summer tour of minor league ballparks."