People with intellectual disabilities often face discriminatory behaviour in everyday life. The aim of this qualitative study was to gain insight into experiences of discrimination of people with intellectual disabilities. The research participants were 25 people with mild intellectual disabilities who live in Zagreb, Croatia. Their experiences indicate that they have experienced direct and indirect discrimination by people from their immediate social environment with whom they interact almost daily. Four themes about experienced discrimination emerged from the analysis: disability harassment, economic disadvantages, denial of the right to form or maintain intimate relationships, and peer rejection and exclusion. Discrimination is manifested in different treatment in fields of education, employment, participation in society and opportunities for realisation of certain social roles. It affects the quality of life and inclusion of people with intellectual disabilities.