Rugby:Trevor Brennan and Gareth Thomas have been called to appear before an independent disciplinary committee in Dublin on February 1.
The Toulouse players face misconduct complaints following the controversial Heineken Cup clash against Ulster last Sunday.
Brennan, the Toulouse lock, is charged under Heineken Cup disciplinary rules with allegedly entering one of the seating areas and assaulting an Ulster supporter.
Thomas is alleged to have engaged in "aggressive exchanges with spectators" and/or "aggressively attempted to enter one of the seating areas" and/or "made an offensive hand gesture towards spectators."
The panel will be chaired by Jeff Blackett, the Rugby Football Union's disciplinary chief, and will also comprise Rod McKenzie (Scotland) and Achille Reali (Italy).
If Thomas is found guilty and handed a ban it will rule him out of Wales' opening RBS 6 Nations clash with Ireland on February 4.