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The aim of this paper is to describe the topological equivariant K -ring, in terms of generators and relations, of a Springer variety F λ of type A associated to a nilpotent operator having Jordan canonical form whose block sizes form a weakly decreasing sequence λ = (λ 1 , ... , λ l). This parallels the description of the equivariant cohomology ring of F λ due to Abe and Horiguchi and generalizes the description of ordinary topological K -ring of F λ due to Sankaran and Uma [13]. [ABSTRACT FROM AUTHOR]