This study aims to compare the marketing performance of potatoes in Kabanjahe Subdistrict with Tigapanah Subdistrict, Karo District, North Sumatra Province. The data analysis method is tabulated according to its type, namely descriptive, marketing margins, and the farmer’s share. The study was conducted in February-March 2018. The results showed: The Marketing Channel of potato in Kabanjahe Subdistrict consisted of two channels while the Tigapanah Subdistrict consisted of three channels; Marketing margin in Kabanjahe Subdistrict with an average of 1,500.00 IDR compared to Tigapanah Subdistrict with an average of 2,513.33 IDR. The farmer’s share in the Kabanjahe Subdistrict is more efficient which averages 81.25% compared to Tigapanah Subdistrict which averages 71.23%. From this comparison it is expected that farmers, traders and related institutions for targeting potatoes of the Tigapanah sub-district can learn from Kabanjahe sub-district in terms of shortening marketing channels, minimizing marketing margins and increasing farmer’s share.