Professional ratings
Review scores
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AllMusic
Blender
Calgary Herald
Entertainment Weekly	(C+)
The Guardian
Los Angeles Times	(positive)
NOW
PopMatters	(3/10)
Rolling Stone
Toronto Star

Dark Horse is the sixth studio album by the Canadian rock band Nickelback, released on November 17, 2008, in Europe and a day later elsewhere. It is the follow-up to their multi-platinum selling All the Right Reasons (2005). It was co-produced by the band and producer and songwriter Robert John "Mutt" Lange, known for working with such acts as Foreigner, AC/DC, Bryan Adams, Def Leppard and Shania Twain. Dark Horse sold 326,000 in its first week and debuted at number 2 in the US. More than a year after its release, the album did not leave the Top 100 on the Billboard 200. In its 91st week, the album peaked at #46 on the latest issue, on the week of August 28, 2010. On 9 October, the album has since stayed there for 97 consecutive weeks, in the position of #71. The album spent 125 consecutive weeks inside the Billboard 200. On the week of November 29, 2014 Dark Horse re-entered the Billboard 200 at #195, more than six years after the album's release.

It was ranked #191 on Billboard's 200 Albums of the Decade. It is also the band's fourth straight Multi-Platinum selling album in the U.S. As of 2010 the album has sold 3 million copies in the United States and 5 million copies worldwide.

The first single from the album was "Gotta Be Somebody", which was released online for free digital download on September 29, 2008, for a strict 24-hour period. "If Today Was Your Last Day" had been planned as the lead single but was scrapped at the last minute. The track "Something in Your Mouth" became available for download from the United States iTunes Store on October 28, and was released to US rock radio airplay as the second single from the album on December 15. The song was a hit in 2009 in many countries, such as the United States. In Australia, it received little airplay.

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