Bonding of a homogenous tributyltin chloride catalyst on the surface of functionalized magnetic nanoparticles provides a new stable, efficient and magnetically recyclable catalyst for trimethylsilylation of alcohols and phenols with hexamethyldisilazan under mild reaction conditions. The catalyst showed good stability and could be reused at least 10 times. The catalyst was characterized using spectroscopic, magnetic, and thermal techniques (FT-IR, SEM, TEM, XRD, ICP, VSM, and TGA).