Chemokines mediate their multiple effects by binding to a variety of specific receptors, that comprise a subfamily of rhodopsin-like, 7-transmembrane domain receptors, coupled to G proteins. Some of these receptors serve as coreceptors for HIV, some of them could be expressed as markers for T lymphocyte functional differentiation. This review aims at summarising data on chemokine receptors, their function in vivo, their target cells and it also mentions association of chemokine receptor polymorphisms with human disease.