Sri Lanka captain Dinesh Chandimal, manager Asanka Gurusinha and coach Chandika Hathurusinghe have been banned for two tests and four one-dayers.
The trio has pleaded guilty to conduct that is contrary to the spirit of the game”, during last month’s St Lucia Test against the West Indies.
There was a two-hour delay on day three in protest against Chandimal being charged with ball-tampering.
Six demerit points have also been added to the trio’s records.
Their bans by the International Cricket Council (ICC) include the two Tests of Sri Lanka’s ongoing home series against South Africa as well as the first four of the five ODIs against the same opposition.