On Zero-divisors in Group Rings of Groups with Torsion Nontrivial pairs of zero-divisors in group rings are introduced and discussed. A problem on the existence of nontrivial pairs of zero-divisors in group rings of free Burnside groups of odd exponent $n \gg 1$ is solved in the affirmative. Nontrivial pairs of zero-divisors are also found in group rings of free products of groups with torsion. Keywords:Burnside groups, free products of groups, group rings, zero-divisorsCategories:20C07, 20E06, 20F05, , 20F50