Abstract: During the past 20 years, the synthesis of functional monomers, their copolymerization behavior, and their use for the synthesis of new functional polymers have attracted considerable interest. The author's own work in this area includes new functional monomers for the development of polymer supports for solid phase peptide synthesis, polymers with 'molecularly imprinted' substrate selectivity, polymer-supported transition metal catalysts, and novel polymers of potential interest for electrocatalysis and targeting of colloidal drug carriers. This review is intended to provide a general discussion of the design, synthesis, and selection of functional monomers for the preparation of functional polymers in the above context. It describes various synthetic routes available for different categories of functional monomers, and discusses polymerization and copolymerization behavior of different monomer types. It also underlines the related problems of monomer solubility and stability, which are particularly important for the synthesis of beaded polymer supports by suspension polymerization. As such, the review presents a general discussion on the choice and synthesis of functional monomers rather than a comprehensive literature survey of the subject. However, reference to recent work on all major categories of functional monomers and polymers is provided