Purchases from vendors involve significant costs for many firms. Decis
ions related to these purchases include the selection of vendors and t
he determination of order quantities to be placed with the selected ve
ndors. Such decisions are frequently multiobjective in nature. That is
, they are evaluated by more than one criterion. At least 23 criteria
for various vendor selection problems have been identified. In this ar
ticle, we present a multiobjective approach to systematically analyze
the inherent tradeoffs involved in multicriteria vendor selection prob
lems. The approach is motivated by, and demonstrated with, an actual p
urchasing problem facing a division of a Fortune 500 company.