The Federation-Sheliak Conflict was a brief skirmish between the United Federation of Planets and the Sheliak Corporate. In 2255, the Treaty of Armens was signed between the two powers, ending hostilities. (TNG: "The Ensigns of Command")

Federation wars
Federation-Sheliak Conflict • Federation-Klingon War (2267) • Federation-Cardassian War • Federation-Tzenkethi War • Dominion cold war • Federation-Klingon War (2372-73) • Dominion War • Temporal Cold War • Federation-Klingon War (alternate timeline)