The article deals with the diversity of herbaceous and ligneous ornamental plant species and their distribution in the old cemeteries of Klaipėda Region. Studies were carried out in 40 cemeteries of Šilutė district, during the vegetation period in 2012. The cemeteries differed in their area, the intensity of their use, and care. In the majority of cases, one to ten species of ornamental plants were found. The largest diversity of ornamental plant species (over 20) were found in the currently used and cared for cemeteries in Mantvydai I and Kukorai. The total number of ornamental plants species established in the cemeteries was under 60. Among the ligneous plants, the common lilacs (Syringa vulgaris L.) and thuja (Thuja occidentalis L.) prevailed. Among the herbaceous ornamental plants, several species and varieties of plantain lily (Hosta L.), common columbine (Aquilegia vulgaris L.), and lily of the valley (Convallaria majalis L.) prevailed.