Local people's perceptions and attitudes toward wildlife have been advocatingfor the success of biodiversity conservation. However, area-specific data on local people's perceptions and attitudes toward carnivore populations and conservation in human-dominated landscapes are scarce. The purpose of this study was to investigate local people's perceptions of carnivore population abundance and trend, as well as their attitudes toward carnivore conservation in the Southern Rift Valley of Ethiopia. We collected data from 352 households' interviews using a semi-structured questionnaire and photographic sampling of 13 carnivore species in 2020. About 57% of respondents perceived the population abundance trend of carnivores had decreased between 2015 and 2019. The reported decline was higher for lions, caracals, and leopards, while the increase was higher for common genets and mongooses. The reported population abundance of carnivore species varied significantly. Only marginally more people (52%) opposed carnivore conservation, citing livestock predation as the primary reason. Two thirds of respondents opposed the conservation of spotted hyenas, black-backed jackals, common genets, and mongoose species while supporting the conservation of lions, caracals, African civets, and leopards. Respondents' livestock number was the most important factor significantly affecting all three models (population abundance, population trend, and support for conservation). Age and education status were displayed to have an effect on population abundance and trend models, while gender, land size, and damage to livestock were shown to have an effect on one of the two models. Thus, we recommend that awareness raising of human-carnivore coexistence through adult education programs be targeted at people who oppose conservation, own more livestock, experience more livestock damage, and have not received formal education. Also, effective livestock husbandry practices should be implemented to promote peaceful human-carnivore coexistence.