The dimeric title compound, [Sm(2)(C(9)H(9)O(3))(6)(C(12)H(8)N(2))(2)], is centrosymmetric and is composed of six 2-phen-oxy-propionate anions and two 1,10-phenanthroline ligands. The Sm(III) atom is coordinated by two O atoms from two bridging anions, four O atoms from two chelating anions and the N atoms of the N-heterocycle in a distorted dodeca-hedral geometry.