"Lucky" is a song by Jason Mraz and Colbie Caillat. It is the third single from Mraz's third studio album We Sing. We Dance. We Steal Things. The song has been on the Billboard charts as well as on the other music charts worldwide.

A Spanish version of the song, called "Suerte", was recorded alongside Mexican singer Ximena Sariñana for the Latin American and Spanish re-edition of the album. Mraz and Caillat won the 2010 Grammy Award for Best Pop Collaboration with Vocals. Mraz and Lil Wayne also did a remix of the song "Lucky" and later was released on Z100. Brooke Elliott performed a karaoke version of the song on a 2009 episode of Drop Dead Diva.Dianna Agron and Chord Overstreet performed the song on a 2010 episode of Glee.

Mraz became a fan of Caillat after hearing her music on MySpace. He then called her to see if she'd want to write and sing together. In an interview with VH1, Mraz stated that he "played a songwriting game" with friends to see how the lyrics would go. Mraz and Caillat performed the song on Saturday Night Live on January 31, 2009. They performed the song again on The Ellen DeGeneres Show in February.

"Lucky" debuted on the Billboard Hot 100 at number 96 for the issue dated January 31, 2009. On the same week it had a debut on the Pop 100 chart at 84 and moved to a peak of 48. The next week the song rose to number 84 on the Hot 100 and peaked at number 48. On the Hot Adult Top 40 Tracks, the song is already a Top 10 hit, reaching #9.

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