Poly( p-hydroxystyrene) resins with different crosslink levels have been prepared by suspension polymerization. Their surface area (SA) and pore size distribution (PSD) were determined by the nitrogen adsorption technique, Ti(OiPr)(4) has been grafted on these supports, and the resulting heterogeneous catalysts were used to promote the transesterification of methyl methacrylate (MMA) with 2-ethylhexanol and the epoxidation of various alkenes with tBuOOH. The stability upon recycling of these polymer-supported titanium catalysts has been assessed.