Afield experiment was carried out at special farm, right bank of Euphrates river in Al-Khaldiya, AL-Anbar Governorate, Iraq during growing summer season 2013 to study the effect of water stress and Salicylic acid foliar application on growthcharacters, yield and yield components of cotton (var. lashata).The experimental design was aRandomized Complete Block Design (RCBD) in split plot with three replicates. The main plots involved the three irrigation intervals (6, 12 and 18 day) and The sub plots involved the Salicylic acid concentrations (0, 50, 100 and 150 ppm). The results showed the irrigation interval at 6 days gave highestrate for plant high (143.17 cm),The irrigation interval at 12 days gave highest rate on number of fruiting (sympodia) branches per plant (40.41),number of total bolls ( 29.15), number of opened bolls ( 24.37), total cotton yield (3747. 4 Kgm. ha-1), lint yield (1433.6 Kgm.ha-1).The Salicylic acid has shown a clear significant effect, the concentration of Salicylic acid(150ppm) give the highest rate for plant high (143.80 cm), number of fruit branches (34.28),total cotton yield (3371. 9 Kgm. ha-1) and lintyield (1241.0 Kgm.ha-1).