This study was carried out through  three successive seasons 2014 , 2015 and 2016  to study the effect of Salicylic acid at (200 &400 ppm) and Naphthalene acetic acid at (50& 100 ppm) as a foliar application on flowering, fruiting, yield and fruit quality of Picual and Manzanillo cvs olive trees (9 years old). Planted 6x6 apart at Horticultural Station Orchard at Shandaweel region, Sohag Governorate. The results indicated that foliar spray of salicylic acid at 200 ppm is recommended for improving productivity attributed to increase flowering percentage and density, as well as percentage of sex expression. Moreover, treatments reduced the alternative bearing and enhanced the fruit physical properties. Furthermore, each of two Salicylic acid concentration (200 & 400 ppm) improved fruit oil content.