Paul Duke, 37, Ross Gallagher, 29, Christopher Bateman, 28, David Gallacher, 22, Sean Cowden, 21, Kieran Duffy, 18 and Greg Robertson, 28, have all appeared in court charged with the offence.
The seven men are alleged to have behaved in a way that "is likely or would be likely to incite public disorder" by singing a song in support of the Irish Republic Army (IRA) at Celtic Park.
All pled not guilty when they appeared at Glasgow Sheriff Court, represented by Paul Kavanagh and a trial was set for next June.
Duke and Gallagher, from East Kilbride, Bateman, from Irvine, Gallacher, from Glasgow, Cowden from Rutherglen and Duffy from Coatbridge, are accused of singing the song, the Roll of Honour, at the champions league qualifier match against Elfsporg match on July 31.
Gallagher, Bateman and Robertson, from Glasgow, are accused of singing the song on August 3, at the first game of the season against Ross County.
Robertson faces a further charge, with Gallacher, of singing at a home game on August 24, against Inverness Caledonian Thistle.