The present study estimated Total factor of productivity growth Pakistan’s Agriculture, using Tornqvist – Theil index number approach for the period 1971 to 2009. Most of the conventional inputs used in the production process in Pakistan’s Agriculture were included in the analysis of TFP estimation. Output and input data of crop and livestock subsectors along with their prices were utilized in constructing output quantity index and input quantity index, respectively. The time series data on twenty- nine crops and four Livestock categories from 1981 to 2009 were collected from different publications and official sources. The average annual TFP growth of agriculture was estimated to be 2.75 percent for the study period and it contributed about 57 percent to total agriculture output growth. The results also indicated that TFP growth in Agriculture sector were 3.36 percent during the last nine year of the study period while it is 1.01 during the decade of 70s. The decade of 80s and 90s registered average TFP growth rate in agriculture of 2.88 and 3.93 percent, respectively. Total factor productivity growth contributed about 31, 51, 68 and 70 percent to agriculture output growth during the decade of 70s, 80s, 90s and the last nine years of the study period, respectively. The analysis of TFP growth during different time periods revealed that fluctuations in the total factor productivity growth were due to public interventions, macroeconomic policies and weather conditions. Supervisor:- Dr. UsmanMustfa