T The arrange of this thesis is done for knowing the compares of efficiency level between national private foreign exchange banks and national private non-foreign exchange banks with using non parametric method : Data Envelopment Analysis. This research using twelve samples of bank that consist of six national private foreign exchange banks and six national private non-foreign exchange banks which have the biggest asset according to the data source in 2009 with secondary data input and output banks period 2004-2009. The result of this research shows that the average levels of technical efficiency of national private foreign exchange banks and national private non­ foreign exchange banks during 2004-2009 is high enough, there above 85%. Although the comparison of efficiency levels between national private foreign exchange banks and national private non-foreign exchange banks are not so much different, but the kind of foreign exchange banks have higher levels of efficiency compared with kind of non foreign exchange banks. During 2004-2009, there were 2 foreign exchange banks and 2 non foreign exchange banks which constantly to maintain the level of maximum efficiency of 100%. Both foreign exchange banks are Central Asia Bank and PAN Indonesia Bank. Whereas, for non-foreign exchange banks are Jasa Jakarta Bank and Kesejahteraan Ekonomi Bank. In addition, can be known that dominant factor causing the inefficiency of the banking industry is the input of labor.