Autism is a complex neurobiological disorder that usually begins to manifest itself in early childhood. It is particularly recognizable by the impairment in social interaction and communication and the presence of limited and repetitive interests and activities. Each person with autism may have different levels of functionality and difficulties in different areas, such as language skills, sensory integration and adaptation to change. Having said that, autism is a condition that requires a comprehensive approach to support, understanding and inclusion to ensure that people with autism can reach their full potential and enjoy a quality life in society. Therefore, it is extremely important for healthcare professionals to be well informed about autism in order to be able to provide quality and adequate care to people with autism. The awareness of healthcare professionals plays a key role in ensuring that the best possible support and care is provided. The goal of the research as part of the diploma thesis was to examine the awareness of health professionals in the Republic of Croatia about autism. The research was conducted as a cross-sectional study with a convenience sample. 105 participants took part in the research. The results of this research showed that the majority of healthcare professionals are well informed about autism and that they understand the symptoms of autism