Parkinson's Disease (PD) is a progressive neurological condition affecting over 150,000 Australians, yet research has predominantly focused on deficit-based models of care. Grounded in the disability paradox, post-traumatic growth, and salutogenic theory, this study examined whether individuals living with PD experience comparable or greater levels of flourishing and mature happiness relative to the general population. A cross-sectional 2 × 2 between-groups design was employed, comparing adults with (n = 161) and without (n = 137) a PD diagnosis across gender. Flourishing and mature happiness were assessed using the Flourishing Scale and the Mature Happiness Scale – Revised. A two-way MANOVA revealed a significant multivariate main effect of diagnosis status (p = .002), with follow-up analyses indicating that non-PD participants reported significantly higher flourishing than PD participants (p < .001, η²p = .040). No significant differences were found for mature happiness, gender, or the interaction effect. The mean difference in flourishing between groups was approximately two scale points, representing a small effect size. These findings partially support the disability paradox, suggesting that while flourishing may be slightly reduced in PD, mature happiness remains broadly comparable, highlighting the resilience and adaptive capacity of individuals living with PD.