Breakouts are dependable indicators of the orientations of current minimum and maximum horizontal stresses and can be used to constrain stress magnitudes. The orientation of the regional stress field in the Zubair oilfield was determined from borehole breakouts caused by stress accumulation at the borehole wall. The analysis is based on oriented caliper log data recorded in ten wells within Zubair oilfield. The azimuths of the breakouts are consistent with depth and indicate a stress direction (Maximum horizontal stress direction is about about 40° to 60° from the North) which is in good agreement with the regional maximum horizontal stress (S_hmax) direction due to Arabian plate subduction with Eurasian plate in the same direction.