The purpose of this research study is to investigate the role of HorizontalrnIntergovernmental Relations in the resolution of the conflicts between Amaro( kore) ofrnSNNPR and Galana (Guji Oromo) of Oromia Regional State.rnTo this end, a descriptive survey method is employed. Primary source of data werernelders, women, youth, members of the cabinet, and members of the police force from bothrnweredas. Secondary sources of data is reports from wereda administration offices as wellrnas pertinent literature on conflict resolution. A total of312 respondents (156 respondentsrnfrom each wereda) were selected using random and purposive sampling techniques.rnInstruments of data collection is questionnaire, interview, foclls group discussion andrnfield visit. The quantitative data were analyzed using percentages where as thernqualitative ones were transcribed, analyzed and finally triangulated with the quantitativerndata where necessary and appropriate. The analysis led to the following major findings:rnlack of adequate grazing land, water, farm land, and the existence of negativernexpressions( connotations) concerning some group of peoples were the major sources ofrnconflict between bordering weredas; the most serious problem leading to conflict wasrngrazing land( 94.8%) and the least one was the existence of negative expressionsrnconcerning groups of peoples; both horizontal intergovernmental relations betweenrnSNNPR and Oromia States and traditional mechanisms of conflict resolution played anrnimportant role in ensuring peace and stability between both communities in disputedrnareas.