Introduction <p>Parents of children newly diagnosed with autism report higher parenting stress levels than parents of typically developing children. Parent-mediated interventions include parents as interventionists in their child’s intervention but often require increased parent effort and time to engage in the intervention. We investigated the influence of a parent-mediated early intervention for autistic children, the Bridge Skill Development Program, on parenting stress and child outcomes.</p> Methods <p>Thirty-eight families of autistic children completed the <i>Parenting Stress Index-4th Edition-Short Form</i> (PSI-4-SF) at pre- and post-intervention. We used paired-samples <i>t</i> tests and linear regressions to examine the effects on intervention outcomes and parenting stress on program outcomes.</p> Results <p>Controlling for mastered pre-intervention skills, children demonstrated significant improvements in core skills from pre- to post-intervention (<i>t</i>(37) = 6.81, <i>p</i> &lt; .001). Parents reported significant pre- to post-intervention reduction in parental distress (<i>t</i>(37) = −&#xa0;2.53, <i>p</i> = .008), parent–child dysfunction (<i>t</i>(37) = −&#xa0;4.03, <i>p</i> &lt; .001), parents’ perception of their child’s difficult behavior (<i>t</i>(37) = −&#xa0;1.94, <i>p</i> = .03), and overall parenting stress (<i>t</i>(37) = −&#xa0;3.34, <i>p</i> &lt; .001).</p> Discussion <p>Results suggest that families benefitted from this parent-mediated intervention, regardless of pre-intervention parenting stress levels, and intervention participation increased child skill development without increasing parenting stress.</p>