Forests play a significant role in climate change mitigation by sequestering and storing morerncarbon from the atmosphere than any other terrestrial ecosystem. Church forests, includingrnother sacred places, are relatively more protected than forests in any other places. The overallrnobjective of this study was to estimate the contribution of church forests to the reduction ofrnatmospheric carbon concentration by conducting case studies in few selected churches aroundrnAddis Ababa. Accordingly, seven churches were selected for the study. To estimate carbon inrnabove and below ground biomass; each tree in the study site which had DBH > 10 cm werernmeasured for DBH, height, basal height, and crown. Above ground biomass was estimated byrnusing allometric models while below ground biomass was determined based on the ratio ofrnbelow ground biomass to above ground biomass factors. Sampling of dead litter and soil carbonrnwere conducted according to sampling quadrates. The results shown that, there were 1519 treesrnin the study sites which had DBH >10 cm. The mean above ground and below ground biomassrncarbon stock ranged from 129.85 + 154.11 and 25.97 + 30.82 t ha-1, respectively. The meanrnabove ground biomass carbon per tree was 0.6 + 0.69 tonne. The mean carbon in dead litterrnand soil carbon were 17.83 + 19.13 and 135.94 + 21.25 t ha-1 respectively. From the point ofrnview of managing forests for climate change mitigation, the result suggested that well managedrnsacred forests could have significantly high contribution to carbon emission reduction andrnenhancing in situ conservation of biodiversity.rnKey words: Carbon sequestration, church forests, climate change and sacred site