"Let's Go" is a song by Scottish DJ Calvin Harris, featuring vocals from American singer Ne-Yo. The track was released in the United Kingdom on 22 April 2012 as the third single from Harris' third studio album, 18 Months (2012). On 29 April 2012, precisely a week after its release, "Let's Go" debuted at number two on the UK Singles Chart for the week ending dated 5 May 2012— marking Harris' third consecutive number two hit (held off by Carly Rae Jepsen's song "Call Me Maybe"). As of July 2012, the song has sold 376,000 downloads in the United States. It also appeared on the deluxe version of Ne-Yo's fifth studio album, R.E.D. The song received a nomination for Best Dance Recording at the 55th Grammy Awards held in February 2013.

The song was used for a Pepsi and Pepsi Max advert that features Lionel Messi, Didier Drogba, Fernando Torres, Wojciech Szczęsny, Frank Lampard, Sergio Agüero and Jack Wilshere.

Lewis Corner of Digital Spy gave the song a positive review stating:

"It's not about what you've done, it's about what you're doing," he aptly states over Calvin's unmistakable electronic flourishes of euphoric synths and speaker-jumping beats, which happens to soundtrack an impressive footballer-starring Pepsi Max ad campaign. Coincidentally, the final result isn't too different from the fizzy beverage; it's sparkling, addictive and sure to give you a burst of energy. .

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