Potato is important for its contribution to food security and as source of cash income for a large proportion of the rural households. However, enhancing potato farmers to reach markets is a key issue needed in the study area. This paper was aimed to identify factors affecting marketed surplus potato farmers using survey data collected from randomly selected 120 farmers. Descriptive statistics was used for characterizing farmers and econometrics analysis was used for identifying determinants of marketed surplus. The distributional graph of household’s log-marketed surplus data seem to be reasonably symmetric, though possibly left skewed. The multiple linear regression estimation result indicated that total livestock unit (number of livestocks owned), land size allocated for potato production, distance to all-weather road, irrigation access, other farm income and lagged price as significant predictors of potato marketed surplus. The study recommended expansion of irrigation access and further infrastructural development for policy implications.