The present study utilizes the stochastic production frontier approach in evaluating the technical efficiency rates achieved in four types of Greek organic and conventional farm operations, namely, olive oil-producing, cotton, raisin-producing, and grapes-for-wine producing farms. The empirical results are expected to illustrate possible differences in the technical efficiency scores between the two farming technologies, and provide empirical evidence which at least in the field of organic farming performance is scarce or even absent. Such assessments may also be helpful for pointing out purely economic advantages (or disadvantages) of organic farming, in addition to its environmental dimension, and formulating policies to improve its economic performance.