Common bean (Phaseolus vulgaris) is a vegetable culture that is spread and accepted all over the world. It is in everyday use because it is rich in minerals and proteins. The aim of the thesis was to determine and compare iron content in samples of traditional bean cultivars collected throughout Croatia. For the purpose of the project „Genetic basis of bioactive nutrient content in Croatian common bean landraces“ seeds of the collected traditional bean landraces were planted on experimental field near Faculty of Agriculture. Afthe sprouting, 300 accessions were described using morphological descriptors, and among them the most numerous cultivars were Cranberry Bean (Trešnjevac), Grean Kidney Bean (Zelenčec), Navy Bean (Biser), Cranberry bean (Dan i noć), Beige Kidney Bean (Puter), White Kidney Bean (Tetovac) and Light Brown Kidney Bean (Kukuruzar). In the time of technological maturity, the seed was dried and analyzed for iron content. The results for each group of accessions were presented in the form of arithmetic means, standard deviations and variances. The average iron content was 71.90 mg Fe kg-1 of dry matter, ranging from 37.31 to 127.21 mg Fe kg-1 for content of dry matter.