A left-handed top-order batsman, he is also a record-breaking wicket-keeper, although he no longer kept wickets at the end of his Test career. Currently, he is the second-highest run-scorer in ODI cricket and the fifth-highest run scorer in Test cricket.
Sangakkara is described as one of the "most polished and prudent of batsmen" in cricket.Along with AB de Villiers, he has dominated the number one spot in the ICC Test batting rankings between 2005 and 2015. On 12 August 2015, Sangakkara was placed at number 5 in the ICC Test rankings.

He was the youngest person and the first active international player to deliver the MCC Spirit of Cricket Cowdrey Lecture, which was widely praised by the cricketing community for its outspoken nature.
In terms of number of innings required, Sangakkara is the fastest batsman to reach 8,000, 9,000, 11,000 and 12,000 runs in Test cricket. He is also joint fastest to 10,000. He won the ICC Cricketer of the Year in 2012, Test Cricketer of the Year in 2012, and ODI Cricketer of the Year multiple times in 2011 and 2013. He has also won the LG People's Choice Award twice, in 2011 and 2012. Sangakkara has regularly featured in the World Test XI and World ODI XI, appearing six times and three times in them, respectively. He was selected as Leading Cricketer in the World in the 2015 edition of Wisden.
He was named the Wisden Leading Cricketer in the World in 2011 and 2015. He is one of two players to have won this award twice, along with Indian opener Virender Sehwag, who won the award in 2008 and 2009.
On 29 January 2015, Sangakkara became Sri Lanka's highest ever ODI run scorer, surpassing the previous record of 13,430 runs held by Sanath Jayasuriya. In the same match, he also broke the record for ODI wicketkeeping dismissals, breaking the previous record of 472 held by Adam Gilchrist.