Purpose -- The banking sector is the backbone of the backbone of the Lebanese economy, and Lebanese banks hold over half of the public debt. Therefore it is critical to periodically assess their efficiency and profitability. Failure to do so could lead the country to a debt crisis or even bankruptcy. The purpose of this study is the measure the efficiently and productivity of 24 Lebanese commercial banks in 2008, 2011 and 2013. Design/ methodology/ approach -- To measure relative efficiency, the study employed three data Envelopment analysis (DEA) models which are the CCR, BCC and A&P. the ...