A Twenty20 International (T20I) is a form of cricket, played between two of the international members of the International Cricket Council (ICC), in which each team faces a maximum of twenty overs. The matches have top-class status and are the highest T20 standard. The game is played under the rules of Twenty20 cricket. The first Twenty20 International match between two men's sides was played on 17 February 2005, involving Australia and New Zealand. Wisden Cricketers' Almanack reported that "neither side took the game especially seriously", and it was noted by ESPNcricinfo that but for a large score for Ricky Ponting, "the concept would have shuddered". However, Ponting himself said "if it does become an international game then I'm sure the novelty won't be there all the time". This is a list of Sri Lanka Cricket team's Twenty20 International records. It is based on the List of Twenty20 International records, but concentrates solely on records dealing with the Sri Lankan cricket team. Sri Lanka played the first ever T20I in 2006.

Key

The top five records are listed for each category, except for the team wins, losses, draws and ties, all round records and the partnership records. Tied records for fifth place are also included. Explanations of the general symbols and cricketing terms used in the list are given below. Specific details are provided in each category where appropriate. All records include matches played for Sri Lanka only, and are correct .

List of Sri Lanka Twenty20 International cricket records

Team records

Overall record

Team wins, losses, draws and ties

, Sri Lanka has played 179 T20I matches resulting in 79 victories, 94 defeats, 4 ties and 2 no results for an overall winning percentage of 45.76.

List of Sri Lanka Twenty20 International cricket records

First bilateral T20I series wins

First T20I match wins

Team scoring records

Most runs in an innings

The highest innings total scored in T20Is has been scored twice. The first occasion came in the match between Afghanistan and Ireland when Afghanistan scored 278/3 in the 2nd T20I of the Ireland series in India in February 2019. The Czech Republic national cricket team against Turkey during the 2019 Continental Cup scored 278/4 to equal the record. The highest score for Sri Lanka is 260/3 scored against Kenya during the 2007 World Twenty20.

List of Sri Lanka Twenty20 International cricket records

Fewest runs in an innings

The lowest innings total scored was by Turkey against Czech Republic when they were dismissed for 21 during the 2019 Continental Cup. The lowest score in T20I history for Sri Lanka is 82 scored against India in the 2016 tour of India.

Most runs conceded an innings

The first match of the Australia's tour of Sri Lanka in 2016 saw Sri Lanka concede their highest innings total of 263/3.

Fewest runs conceded in an innings

The lowest score conceded by Sri Lanka for a full inning is 39 when they dismissed the Netherlands during the 2014 ICC World Twenty20 at Zohur Ahmed Chowdhury Stadium, Chittagong, Bangladesh.

Most runs aggregate in a match

The highest match aggregate scored in T20Is came in the match between India and West Indies in the first T20I of the August 2016 series at Central Broward Regional Park, Lauderhill when India scored 244/4 in response to West Indies score of 245/6 to loose the match by 1 run. The first match of the Australia's tour of Sri Lanka in 2016 saw a total of 441 runs being scored, the most involving Sri Lanka.

Fewest runs aggregate in a match

The lowest match aggregate in T20Is is 57 when Turkey were dismissed for 28 by Luxembourg in the second T20I of the 2019 Continental Cup in Romania in August 2019. The lowest match aggregate in T20I history for Sri Lanka is 79 scored during the 2014 ICC World Twenty20 against Netherlands.

Result records

A T20I match is won when one side has scored more runs than the runs scored by the opposing side during their innings. If both sides have completed both their allocated innings and the side that fielded last has the higher aggregate of runs, it is known as a win by runs. This indicates the number of runs that they had scored more than the opposing side. If the side batting last wins the match, it is known as a win by wickets, indicating the number of wickets that were still to fall.

Greatest win margins (by runs) The greatest winning margin by runs in T20Is was Czech Republic's victory over Turkey by 257 runs in the sixth match of the 2019 Continental Cup. The largest victory recorded by Sri Lanka was during the 2007 ICC World Twenty20 by 172 runs against Kenya.