The aim of this research was to gain insight into the support needs of foster parents of children with developmental disabilities in the Koprivnica-Križevci County. A qualitative approach to data collection was used for this research. Data were collected through the focus group method. The focus group was guided by pre-prepared questions in accordance with the set research questions. The focus group lasted two hours and was recorded using a dictaphone, with prior informed consent obtained for participation in the research, in accordance with ethical procedures to protect the rights and interests of participants. The research included 6 participants. Participants were selected using purposive sampling technique, specifically forming a purposive non-probabilistic sample. The criterion for selecting research participants, given the topic of the research, was to include foster parents of children with developmental disabilities living in the Koprivnica-Križevci County. The type of qualitative data analysis used was thematic content analysis. The research findings defined four thematic areas with associated themes and subthemes: challenges of foster parents of children with developmental disabilities; current support needs of foster parents of children with developmental disabilities; knowledge, skills, and resources that foster parents consider crucial for fostering children with developmental disabilities; and reflections of foster parents on the formal and informal support systems currently available to them. The key findings of this research indicate challenges faced by foster parents of children with developmental disabilities, such as lack of information, difficulties and accompanying health conditions of the children, challenging behaviors, placement disruptions, and various specific challenges. The research also indicates the foster parents' need for better information regarding the overall care and placement of a child with developmental disabilities, the need for increased financial resources, higher quality and more specific training for foster parents, and the need for alignment of work methods and opinions among different systems. The most important and best form of support for foster parents proved to be the informal support system through conversations and consultations with other foster parents and family, as well as through the foster parent association and supervision.