Introduction: This study describes and evaluates Good Arts, Good Mental Health® (GAGMH), a groundbreaking, population-level, arts-mental health promotion media campaign. The objectives of the campaign (Wave 1) were to increase brand awareness, comprehension, and agreement with the tagline Good Arts, Good Mental Health® and empower the general population to form an intention to engage in the Arts for their mental wellbeing. Methods: The campaign ran from August to September 2024 (4 weeks), cost AUD$198,965 (23% creative and 77% media/advertising distribution), and targeted the Western Australian (WA) general population aged 18–65 years, all genders, in both metropolitan and regional areas. The
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