In the study, scale efficiencies of life insurance and/or private pension companies in Turkey are analyzed using Data Envelopment Analysis (DEA) over the period 2010-2011. In the study, input driven BCC model is used for measuring scale efficiency. Compared to the previous year, an increase in the average scale efficiency of life insurance companies is detected in 2011, while a decrease in the average is detected for the companies in the life insurance and/or private pension branch. When life insurance companies and life insurance and/or private pension companies are assessed in general, the average scale efficiency of the companies was 92% in 2010 and 88.7% in 2011. In 2011 a decrease of 3.3% is seen. While 14 companies were efficient in 2010, in 2011 12 companies were efficient.