The 2020–21 SLC Twenty20 Tournament was a Twenty20 cricket tournament that was held in Sri Lanka.

It took place from 4 to 20 March 2021.

[1] Colombo Cricket Club were the defending champions.

[2] A total of 26 teams took part in the tournament,[3] split into four groups, with 79 matches being played.

[4] Sinhalese Sports Club and Sri Lanka Army Sports Club reached the final of the tournament,[5] with Sinhalese Sports Club winning the match by 29 runs.