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In the title compound, [Pb(C7H4FO2)2(C12H8N2)2(H2O)0.5]·2H2O, the PbII atom is coordinated by four N atoms from two bidentate chelating 1,10-phenanthroline (phen) ligands, four O atoms from two 2-fluorobenzoate ligands and a half-occupied water molecule in an irregular coordination geometry. One carboxylate O atom and two F atoms are each disordered over two sites with occupancy factors of 0.558 (6) and 0.442 (6). The two crystallographically independent phen ligands are co-planar [dihedral angle 0.0 (2)°]. Centroid–centroid distances of 3.659 (7) and 3.687 (7) Å indicate π–π stacking interactions between neighboring phen ligands. In the crystal, O—H...O, C—H...F and C—H...O hydrogen bonds link the complex molecules and uncoordinated water molecules into a supramolecular network.