Lanthanum (La) Nanoparticles, nanodots or nanopowder are black spherical high surface area particles. Nanoscale Lanthanum Particles are typically 5 - 40 nanometers (nm) with specific surface area (SSA) in the 30 – 50 m 2 /g range and also available in with an average particle size of 60 - 100 nm range with a specific surface area of approximately 5 - 10 m 2 /g. Nano Lanthanum Particles are also available in passivated and Ultra high purity and high purity and coated and dispersed forms. Applications for lanthanum nanocrystals include numerous fuel cell functions such as in the cathode of solid oxide fuel cells (SOFC) and for phosphate removal in biomedical and environmental uses, as a heat block in glass using lanthanum hexaboride (LaB 6 ) and in coatings, in phosphors, nanophosphors and doped phosphorous nanoparticles plastics, nanowire, nanofiber and textiles and in certain alloy and catalyst applications. Further research is being done for their potential electrical, dielectric, magnetic, optical, imaging, catalytic, biomedical and bioscience properties.