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Building on the dispersion and acoustic mixing methods developed during the creation of NASA's Glenn Research Center GRX-810 technology, this Additively Manufactured ODS Steel uses an innovative coating process to overcome the limitations of traditional ODS steel manufacturing. The technology deposits yttrium oxide nanoparticles onto spherical iron-chromium steel powder particles. During the additive manufacturing process, the coated powder particles are melted and consolidated layer by layer using laser powder bed fusion. As the material solidifies, the oxide nanoparticles distribute uniformly throughout the microstructure, creating a dispersion-strengthened material. The dispersed yttria nanoparticles pin grain boundaries and dislocations, significantly improving creep resistance and mechanical strength at elevated temperatures. Preliminary testing has demonstrated a 10-fold improvement in creep properties compared to non-ODS baseline steels. The technology demonstrates compatibility with industrial-scale laser powder bed fusion systems and can be adapted to incorporate alternative ceramic nanoparticles beyond yttria. Applications span the nuclear energy sector, including commercial fission reactor components, fusion reactor first-wall and blanket structures, nuclear thermal propulsion systems for space exploration, and in-space nuclear power systems where extreme temperature performance and radiation resistance are essential. This strengthened steel is available for patent licensing.