The present study entitled, “Production Efficiency of Summer Groundnut In Washim District of Maharashtra State”. The study was undertaken to examine the cost and returns summer groundnut cultivation. For the present study 120 summer groundnut farmers were selected from Mangrulpir, Manora and Washim tehsils of Washim district. The primary data was collected from the summer grounndnut farmers by survey method and pretested schedule. To estimate the cost and returns of summer groundnut standard cost concepts i.e. cost A
1, cost A
2, cost B
1, cost B
2, cost C
1, cost C
2 and cost C
3 were used. To estimate technical, allocative and economic efficiency. stocastic frontier production function was used. It is revealed from the study that Cost ‘C
3’ of summer groundnut farmer was Rs 96259.40. Gross returns of summer groundnut was Rs 103774.61. The
Benefit-cost ratio at cost 'C
3' of summer groundnut was 1.52. It shows that the summer groundnut crop appeared to be good for monitory benefits and profitable crop. The mean technical efficiency was 89.55. It is observed that the minimum technical efficiency was 43.79 and the maximum technical efficiency was 99.47. The mean economic efficiency was 56.74. The minimum economic efficiency was 2.32 percent and maximum economic efficiency was 79.90 percent. The mean allocative efficiency of the sample farms was 63.72 percent. The minimum allocative efficiency was 5.30 percent and maximum allocative efficiency was 103.19 percent.