In case B = R, we denote the corresponding space by Lip(M ). Regarding a subset S ⊂ M as the metric space equipped with the induced metric, we introduce the family of spaces Lip(S, B). We say that M satisfies the linear Lipschitz extension property if λ(M ) < ∞.In the same way we define the nonlinear Lipschitz extension constant ν(S, M, B) to be the infimum of the constants C such that every f ∈ Lip(S, B) admits an extension toWe are ready to present the main result of the paper. For its formulation we let B fin denote the category of all finite-dimensional Banach spaces. Also, we set ν(M ) := sup{ν(M, B) : B ∈ B fin }.2000 Mathematics Subject Classification. Primary 54E40.