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Siblings of individuals with neurodevelopmental conditions (NDCs) are at higher genetic and environmental risk for poorer psychological and social adjustment, delayed neurocognitive development, more internalizing (ie, depression and anxiety) and externalizing (ie, hyperactivity, aggression) difficulties, and more co-occurring neuropsychiatric conditions, compared siblings of individuals without NDCs. Conversely, NDC siblings can and do exhibit resilience, even in the presence of genetic and environmental vulnerabilities. A minority of reviews report positive outcomes, including increased empathy, prosociality, maturity, and personal growth. No previous study to date has examined personal self-identified strengths and future wishes of siblings of persons with NDCs compared to those without.