"I Won't Give Up" is a song by American singer-songwriter Jason Mraz. It was released as the first official single from his fourth studio album, Love Is a Four Letter Word on January 3, 2012 via iTunes. It was written by Mraz and Michael Natter, and produced by Joe Chiccarelli.

The acoustic folk ballad was written during his activist outings and discusses not giving up on loving someone, loving oneself, and not giving up on one's dreams. It received mostly positive reviews from music critics, who agreed that the song is straightforward, emotional and inspiring.

The song was also a success on the charts, debuting at number 8 on the Billboard Hot 100 chart, becoming his second top-ten single, after "I'm Yours" (2008). Internationally, the song achieved large success, reaching top-ten positions in Ireland and Netherlands, while reaching top-twenty positions in Austria, Canada, the United Kingdom and more.

After "I'm Yours" remained at the Billboard Hot 100 chart for a record 76 weeks ending in October 2009 (peaking at number 6), Mraz headed to the Gulf of Mexico in the summer of 2010 to help with efforts to clean the Deepwater Horizon oil spill. Later, he went to a trip to Ghana to fight child slavery alongside the nonprofit organization Free the Slaves. Later, Mraz was in Antarctica, spending time with Al Gore and learning about climate change aboard the National Geographic Explorer. During his activist outings, Mraz wrote and recorded his fourth album, Love Is a Four Letter Word, with producer Joe Chiccarelli. In an interview for Billboard, he confessed that he was less interested in following up his biggest hit than using the power that "I'm Yours" gave him to fuel positive change. He further elaborated: "The pressure I put on myself, or what I hope my 'I Won't Give Up' does, is to make a difference in people's lives . . . With 'I'm Yours,' I got to go out and set my feet on different continents, and expose myself to different cultures and causes. I wanted to see who I was, outside of music."

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