We report epitaxial growth of Fe thin films on both n-type GaAs(001) and GaAs(011) substrates using electrochemical deposition. The structural quality depends on the composition of the plating solution. The magnetic properties are characterized by fourfold crystalline anisotropy for the Fe(001) film while for the Fe(011) layers we observe a uniaxial anisotropy induced by the substrate asymmetry. The in-plane coercivity is around 30-100 Oe. (C) 2004 The Electrochemical Society.