Insects are one of the diversified and most important species components of biodiversity. Therefore, this study was carried out to examine the diversity of insects at Behire Tsige Public Park, Ethiopia. Studies on the diversity of insects at different habitats (grassland, flowers and grass mixed and mixed vegetation) of the Public Park were investigated using quadrate and transect walk methods. Insect collections were carried out using a sweep net and identified at the order and family levels. The data were analyzed using diversity indices. Nineteen families of insects belonging to seven orders were recorded. Flowers and grass mixed vegetation of the park has the highest insect diversity and mixed vegetation of the park had the highest evenness. Orthoptera and Lipedoptera were the most abundant orders. Based on Jaccard’s similarity index, Flower and grass mixed vegetation and grassland vegetation showed the highest similarity. Grassland showed the highest Margalef’s Richness Index. The abundance of food, species of vegetation, stability of the habitats and human activities determined insect diversity at the Public Park. The administration and local people have to give due attention to the purposeful use of the park through the protection of the different vegetation types which are habitats and food sources of the various insects in the study area.