Ballinderry Shamrocks players Aaron Devlin, Michael Conlan and Gareth McKinless have been suspended for 48 weeks each following the tempestuous recent Derry county final.
Inter-county player Devlin has been banned for a subsequent derogatory tweet (since deleted) about the match officials, who awarded a disputed late goal that was enough for Slaughtneil to claim the title on a 1-08 to 0-09 scoreline.
Ballinderry believed the ball hadn't crossed the line and officials were jostled by supporters.
A melee followed after the match was restarted.
It is believed to be the first time that the GAA has handed out a ban for comments made on social media, a regular practice in other sports.
In addition to the suspensions, Ballinderry's pitch was ordered to be closed to adult games for a year,
"The club co-operated fully with Derry GAA and regret and apologise for scenes around the county final," Ballinderry chairman Stephen McGeehan told BBC Sport Northern Ireland on Wednesday.
"The sanctions seem very severe but no decision will be taken until the executive committee meets on Wednesday night."
