The experiment were performed on the broccoli (Brassica oleracea var. Italica) at an a private farm in, Tema, city, Sohag, Egypt located at N 26° 52' 12.1908", E 31° 24' during the two successive winter seasons of 2018 and 2019 respectively, to study the effect of foliar applications with carbon nanotube (CNTs), benzyladenine (BA) and the combined effect of them on vegetative growth, head yield and head quality of broccoli in a clay loam soil. CNTs at 3 g/L, 5 g/L and 7 g/L concentrations and 50, 100 and 150 ppm of BA and the interaction of them, was sprayed on broccoli seedlings after two weeks of transplanted. A random complete block design (RCBD) with three replications was used. The data showed that positively effect of CNTs at 7 g/L and 100 ppm of BA. Also, CNTs at 5 g/L plus BA at 100 ppm scored the maximum values of broccoli growth characters and flower head yield.