"A Moment Like This" is a song originally recorded by American singer Kelly Clarkson the first winner of American Idol, released as her first ever single which topped the Billboard Hot 100 from her multi-platinum debut album, Thankful. It has been recorded by Leona Lewis, the third winner of the British television programme The X Factor.

The song was co-written by Jörgen Elofsson and John Reid (of dance act Nightcrawlers) and produced by Stephen Ferrera and Steve Mac. It was written to be the first single for the winner of the first season of American Idol. As a result, the four remaining finalists, Kelly Clarkson, Justin Guarini, Nikki McKibbin, and Tamyra Gray each recorded a version of the song in case he or she won. The song was first revealed to the public when Guarini and Clarkson competed in a final showdown while singing this song, along with another track, "Before Your Love". After the American public had voted, Guarini performed the song (and Clarkson performed "Before Your Love") at the final show before the results were revealed. When Clarkson was announced as the winner, she became emotional, and sang the song as her final performance.

"Before Your Love", was also given to radio and had a video shot, which debuted on MTV's TRLbefore "A Moment Like This" did; however, it failed to achieve the level of success of "A Moment Like This". To date, "A Moment Like This" has sold approximately 1,047,000 copies.

On 10/18/2002, the single was certified gold by RIAA and has sold over 500,000 copies in all formats in the U.S.

The music video for "A Moment Like This" is relatively simple, and has Clarkson exploring an abandoned theatre. She can be seen taking the stage to sing, and clips of her singing on American Idoland getting emotional when she won are also shown.

As the first single ever from American Idol, much pressure was put on "A Moment Like This" to perform well. The debut single from Will Young, the winner of Britain's Pop Idol(the forerunner to American Idol), sold 1.2 million copies in its first week, becoming the fastest-selling British debut single of all time; however, critics argued that the American singles market was different from the British market. The single became a hit in the U.S., reaching number one on the Hot 100 for two weeks. Sales of the commercial single also helped the song (as evidenced by its number-one peak on the Hot 100 Singles Sales) break records. With the release of the single, the song broke The Beatles' record for the biggest leap ever to number one, from 52, in the history of the Hot 100 Chart, a record that would stand for five years. She would break the record again when her new song "My Life Would Suck Without You" jumped 96 spots from 97 to 1 in 2009.

In December 2006, the song was recorded by Leona Lewis, the winner of series 3 of The X Factor. The single was rush-released on Wednesday, December 20, 2006. This is unusual as most new singles are released on a Monday to gain maximum sales for the UK Singles Chart the following Sunday. The late release of "A Moment Like This" was due to the fact that Lewis was only chosen as the artist on the night of Saturday, December 16, when the live final was transmitted. The song was available for download after she was announced winner of The X Factor.

In January 2007, "A Moment Like This" was shortlisted for the British Single award at the 2007 BRIT Awards. It made it to the second round but was eliminated and did not make it to the final selection. In May it was awarded the prestigious Ivor Novello Award for Best Selling British Single.

The music video, like Clarkson's, is very simple, with Lewis singing the song on a stage. It also features several clips from Lewis's time in The X Factor, from her first audition to the moment she was announced the winner. Simon Cowell, Sharon Osbourne, Louis Walsh, Kate Thornton and Raymond Quinn all feature within the clips. The video was directed by JT.

It was reported that one million copies of the winner's single were pre-ordered by stores. "A Moment like This" was downloaded 50,000 times within 30 minutes of being available online. It ended as the UK's second best selling single of the year. In January 2007, the single was awarded platinum status by the British Phonographic Industry.

The single got the iTunes UK number-one spot on the day of release, beating Take That who had been at the top spot for two weeks. On December 24, 2006 it debuted at number one on the UK Singles Chart, making it the coveted Christmas number one, and stayed at number one for four weeks. It also spent six weeks at the top of the Irish Singles Chart. It re-entered the UK Top 75 on October 28, 2007 at number 55, when Lewis's second single "Bleeding Love" was released.

There is a cover version of "A Moment Like This" by Dutch singer Glennis Grace, a Swedish version called "Ett kort Ögonblick" released by Swedish duo Fame, and a cover version by Sandra Oxenryd. All three have performed in the Eurovision Song Contest in 2005 , 2003 and 2006 respectively. Another version of "A Moment like This" is featured in the Drawn Togetherepisode "A Tale of Two Cows", where Toot Braunstein sings a shrill, off-key version while having sex with Xandir. Toot also sings it in the series finale in a parody of American idol in 2007. Kidz Bop Kids covered "A Moment like This" on their album Kidz Bop 3. The song was also covered by Idol Sweden2005 finalist Cindy Lamreus on the Idolcompilation, My Own Idol.

Most recently, on October 1, 2008, the top ten finalists of America's Got Talentseason three performed the song together live on the season's finale episode.