Jordan Morrison, a 19-year-old resident of Barrie, Ont., was killed outside a resort nightclub in Punta Cana on Feb. 4, 2011.
Witnesses have said Morrison was attacked after he had come to the aid of a woman in a bar who was spit on.
Canadian citizen Dmytro Aref Yev and Algerian national Bouzid Redha, who were both 21 at the time, could face up to 20 years in jail if found guilty of homicide.
Their lawyer has said the men were drunk at the time of the fight and did not intend to kill Morrison and that the death was an accident.
Three other Canadian tourists were initially held in connection with the attack, but were released on bail after a judge decided they had no direct role in the fight.