A lot of attention has been given to bone cements due to their lack of mechanical properties. The improvement of this property is essential, once it makes possible the usage of these biomaterials in sites that require a significant mechanical strength resistance. To do so, reinforcement agents, such as fibers, in particular biocompatible fibers, have been synthesized [1]. This study reports the synthesis of stequiometric Hydroxyapatite whisker-like fibers utilizing the Molten Salt Synthesis process of nanometric Hydroxyapatite with a salt flux mixture of KCl/NaCl. According to SEM images, EDS analysis and X-ray diffraction, the fibers obtained presented well defined and elongated (main length of about 70μm) hexagonal morphology with Ca/P ratio of 1.66.396-398 497500Xu, H.H.K., et., al., (2002) Biomaterials, 23 (1), pp. 193-202Jalota, S., et., al., (2006) Wiley InterScience, , DOI: 10.1002/jbm.a.3085Neira, I.S., et., al., (2008) J. Mater. Sci, 43, pp. 2171-2178PARK, H.C., et., al., (2004) J Mater. Sci, 39, pp. 2531-2534Bozkurt, S.B., (1995) The Densification and Sintering Behavior of Molten Salt Synthesized HA Whisker/HA Composites, , MSc Dissertation, Izmir Institute of TechnologyRigo, E.C.S., (1995) Efeito das condições de precipitação sobre as características físico- químicas da hidroxipatita, , MSc Dissertation, Universidade Federal de São Carlos, UFSCAR, Brasil