"Don't Waste Your Time" is a song by American pop-rock singer-songwriter Kelly Clarkson. It was written by Clarkson, Fredrik Rinman, Jimmy Messer, and Malcolm Pardon, sampling riffs from Ira Losco's "Uh Oh". It is the second and final European single from Clarkson's third studio album, My December, released in several European countries via iTunes on November 16, 2007. It was released as a CD single in Germany on December 14, 2007. (See 2007 in music). In Australia, it was promoted as the album's third single in February 2008, in time for the Australian leg of the My December Tour.

On July 27, 2007, Sony BMG UK exclusively revealed "Don't Waste Your Time" as the second single from My December to be released in the United Kingdom.It was never released in the UK, but was played on UK music television channels. Clarkson herself confirmed its release in Canada during her appearance in Canada's MTV Live on August 20, 2007. The release was eventually cancelled.

On August 23, 2007, Mizz Magazine confirmed that "Don't Waste Your Time" was going to be released in September 2007. However it was later postponed to November 2007 due to the music video not being ready for release. Nearing the date of October 29, 2007, "Don't Waste Your Time" was placed onto the "Coming Soon" list implying that the single will be released at a later time in the United Kingdom. The UK release of the single was scrapped and it was never released in the United States.

About.com editor Bill Lamb wrote that this songs "poppy" chorus of "Don't Waste Your Time" will have listeners signing along in no time. Rolling Stone editor Rob Sheffield wrote that her voice sags this song which according to him haves the best line of whole album: "Friend? What does that even mean?" Sputnik editor Dave Donnely wrote that ‘Don’t Waste Your Time’ boasts catchy hooks, but according to him "the verses are stagnant, bogged down by a rigid rhyming scheme which prevents the singer from injecting any fluidity into her performance." Stylus Magazine editor Josh Love wrote: "As lyrically sour as it may be, “Don’t Waste Your Time” is a fantastically layered pop-rocker."

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