Children diagnosed with autism are likely to be more overweight than children who do not have autism. There are many group programs that help children to be more physically active and improve their eating habits to achieve healthy weight, but most of these programs do not allow children with autism to participate. We studied a program that was specially adapted so children with autism could participate together with peers who do not have autism. The program lasted 8 weeks and was offered in the evening at a large healthcare center in a big city. The children participated with a parent or another adult who takes care of them. We analyzed data that were part of a previous project where we studied how physical activity trackers called Fitbit help overweight children to change their eating and exercise habits so they can achieve healthier weight. Out of 158 families in the study, 15 families had a child or children with autism. We measured changes in the weight of children with and without autism and compared how many of the children completed the program. Children who had autism had similar results in achieving healthy weight and finishing the program compared to their peers without autism. Our study found that when a group weight management program is slightly changed to meet the needs of children with autism, they can successfully participate and benefit similarly to their peers who do not have autism.