An interpretation based on site and factor symmetry analysis has been given of infrared spectra of the natural layered uranyl phosphates metaautunite, metatorbernite, metauranocircite I and II, saleeite and sabugalite, of the deuteroanalogues of metaautunite, metatorbernite and metauranocircite II and of the Raman spectrum of metatorbernite. The principal correlation relationships for the analysis of virbrational spectra G M (symmetry of free ion) ⊒ G S (site symmetry) ⊑ G F (factor symmetry) have been described. The results have been correlated with data from X-ray structure analysis.