Hydroxyapatite-polymer nanocomposites, which are nanoparticles/microparticles, methods for making them, and articles made from them are disclosed. These methods are capable of preparing nanocomposites exhibiting more homogeneous dispersion of nanoparticles than is seen using previous methods. Such nanocomposites and articles are useful for a wide variety of applications, such as biological, medical, biochemical, biosensor, fuel cell, and aerospace applications.