The present invention provides a surfactant composition containing a polyglycerol alkyl ether which is capable of exhibiting a high emulsification performance for silicone oils compounded in cosmetics, detergents, etc., by using a natural alcohol derived from oils and fats as a raw material thereof, a process for producing the surfactant composition in an effective manner, and a use of the surfactant composition. The present invention relates to [1] a surfactant composition including a specific polyglycerol monoalkyl ether (1) and a specific polyglycerol dialkyl ether (2), a mass ratio of [(1)/(2)] being from 65/35 to 75/25; [2] a process for producing the surfactant composition; [3] an emulsifier composition including the surfactant composition; and [4] a detergent composition including the surfactant composition.