Viva La Vida sold 6.8m copies worldwide in 2008
Coldplay's Viva La Vida or Death and All His Friends was the best-selling album of 2008 worldwide, figures show.
The band sold 6.8m copies according to the IFPI, the body that represents the recording industry worldwide.
Veteran rockers AC/DC secured the number two spot with their 15th studio album Black Ice.
The cast of Mamma Mia! The Movie, including Meryl Streep, were at number three with their soundtrack album, which was released in July 2008.
The figures show four of the top 10 albums of 2008 were by British artists.
Welsh singer-songwriter Duffy was placed fourth with her debut album Rockferry and was also the biggest-selling new artist worldwide in 2008.
Metallica's ninth studio album Death Magnetic took fifth place.
Leona Lewis and Amy Winehouse were sixth and seventh respectively with Spirit and Back to Black, even though their albums were released one to two years earlier.
The soundtrack to High School Musical 3: Senior Year was the eighth best-selling, with Lil Wayne's Tha Carter III at nine.
Rihanna's Good Girl Gone Bad completed the top 10.
Viva La Vida sold more downloads than any other album in digital history within a month of its release in June.
Coldplay also recently picked up three Grammy awards in the US, including best rock album, and are nominated for four of Wednesday's Brit Awards.