THE PRESENT study is an attempt to investigate the effect of saline soil at the levels of 0, 1000, 3000 and 5000 mg/l and foliar application of Naphthalene acetic acid (NAA) at 0.0, 25, 75, 125, 200 and 300 ppm on vegetative growth, chemical composition and oil yield production of Rosemary plant. The results indicated that increasing salinity levels decreased all measured growth parameters, chemical composition, and oil production. However, foliar application of NAA reduced the harmful effects of salinity and improved the growth by increasing the concentration of NAA up to 200 ppm then decreased at higher NAA concentration (300 ppm).