This pilot study examined the relations among preschool teachers' attitudes towards the inclusion of children with autism and perceived self-efficacy, as well as demographic characteristics such as teachers' work experience and educational background. The cohort consisted of 21 participants who had degrees in preschool education and worked with children with autism in general preschool/ kindergarten settings in central Sweden. Data were collected using the Autism Attitude Scale for Teachers, the Teacher Efficacy Scale and a demographic survey. In general, findings revealed that preschool teachers held positive attitudes towards children with autism, and this was significantly related to the number of credits in special education taken during pre-service education. However, teachers showed neutral attitudes towards the inclusion of children with autism into general preschool classrooms. No relations were found between teachers' perceived self-efficacy and attitudes towards inclusion, although a relationship was found between participation in in-service training and efficacy to make decisions. Implications concerning early childhood education professional development and supervision are discussed. (author abstract)