Teachers' attitudes towards the education of children with autism spectrum disorder (ASD) play a significant part in successfulness of the inclusive education. The goal of the present study was to examine the attitudes of teachers from Bosnia and Herzegovina (BIH) towards the inclusion of students with ASD in general education classes. The sample for this study comprised 105 elementary school teachers (75 females, 30 males) from different parts of BIH. We examined the attitudes in relation to teachers' age, gender, education level, experience in work with children with ASD, self-efficacy, and additional training on ASD. The findings of this study indicate mainly positive attitudes of teachers towards the inclusion of students with ASD. However, at the same time, results reveal a sense of non-competence of teachers in providing educational and behavioural support to students with ASD. Teachers who had ASD training and who felt competent to work with children with ASD had significantly more favourable attitudes than teachers without such training and without a sense of teaching competence. Gender, age, and education level had no significant effect on the teachers' attitudes. Results of this study clearly indicate the need for additional teacher training regarding the education of children with ASD.