This article reports on a pilot study of a parent-only cognitive behavioural therapy (CBT) programme for parents of children with autism spectrum disorders (ASD) and anxiety difficulties. Twenty-one parents of anxious children with ASD (5-11 of age) completed the From Timid to Tiger intervention. Parent outcome measures were assessed at post-intervention and at 3-month follow-up. Analysis indicated significant reductions in both parent and clinician reports of child anxiety symptoms. Specifically, 38% of children were free of their primary diagnosis at treatment end and this increased to 57% when measured at 3-month follow-up. Positive gains were evidenced regarding parents' ability to manage their child's anxiety without accommodating to it. The results provide preliminary evidence of parent-only CBT programs for children with ASD.