The objective of the investigations was to determine the correlation between the content of sugars in potato tubers and the colour of chips made thereof. Eleven (11) potato cultivars and their tubers constituted the investigation material. The investigations were performed in the years from 2003 to 2007. Based on the results of the investigations accomplished, significant correlations between the colour of potato chips and the content of reducing sugars (r = -0.87) and sucrose (r = -0.60) were reported. The higher the content of sucrose, the higher the content of the reducing sugars (r = 0.86). Moreover, essential correlations were found between the content of starch in potato tubers and the content of reducing sugars (r = – 0.74) and the content of sucrose (r = 0.60). The correlation coefficients significantly depended on the potato cultivar. The highest coefficients of the correlation between the colour of chips and the content of reducing sugars in the tubers were reported for the Victoria and Nora cultivars. However, in the case of the Gracja, Augusta, Kuklik, Cekin, and Raja cultivars, the most significant correlations, manifested in high correlation coefficients, occurred between the colour of potato chips and the content of sucrose in the tubers.