This study aims at evaluating financial performance of manufacturing companies listed on Borsa Istanbul with a recent methodology: Grey Relational Analysis. The analysis is conducted with financial ratios related to liquidity, debt, activity and profitability. Eleven ratios of ninety eight companies for the year 2015 are employed in the analysis. According to the results; although a stationery company shows the highest performance, cement and fertilizer companies predominate, and additionally there is one textile and one ceramic company in top ten companies.