A field trial was carried out in the district of Kothi (Jableh) North of Babil Governorate, in soil by a silty clay mixture in the winter season of 2021/2022, to study the influence of foliar nutrition through boron (B) on growth and yield components of some field bean varieties. The research was carried out in split-plot design arranged in a randomized complete blocks with three replications. The filed bean varieties (Turkish aquadlge “V1", American aquaduice a longue cross :V2:, Spanish luz de Otono “V3" and Holandotono star “V4") were devoted in the main-plots. While, the sub-plots were assigned with boron (B) concentrations of 0, 150, 200 mg/liter as foliar feeding twice, the first at 50% flowering stage, and the second at 75% flowering stage. The obtained results showed significant differences among studied field bean varieties, where the V3 variety gave a significant superiority for all studied traits. Foliar sprinkling field bean plants with B at various concentrations significantly affect all studied traits. Sprinkling with 200 mg B/L significantly increased all studied characters as compared with sprinkling with boron at a concentration of 150 mg/L or control treatment. The interaction had a significant influence on some of the studied traits. From the obtained results in this study, it could be recommending planting Luz De Otono variety and sprinkling plants with 200 mg /L twice, the first at 50% flowering stage, and the second at 75% flowering stage under the ecological circumstances of studying area.