New layered ternary transition metal nitrides, FeWN2 and MnMoN2, were synthesized in single-step reactions by the ammonolysis of ternary transition metal oxides. Solid-state precursors FeWO4 and MnMoO4 were treated with ammonia at 625 and 800 degrees C to yield the ternary nitrides FeWN2 (P6(3)/mmc; a = 2.87630(5) Angstrom, c = 10.9320(4) Angstrom) and MnMoN2 (P6(3)/mmc; a = 2.92262(8) Angstrom, b = 10.8564(4) Angstrom), respectively. Structures are proposed on the basis of Rietveld analysis of powder X-ray diffraction data. These compounds are members of a family of layered hexagonal ternary nitrides, consisting of alternating layers of MN(6) (M = Fe, Mn) octahedra and M’N-6 (M’ = W, Mo) trigonal prisms. The conductivity data for both compounds indicate metallic-like behavior.