The Maha Kumbh in India and Hajj in Saudi Arabia are among the world's largest religious gatherings, profoundly influencing tourism, infrastructure, and employment. This study examines their economic models from 2000 to 2024, focusing on revenue generation, investment trends, and job creation.Maha Kumbh, drawing up to 400 million visitors, significantly boosts local economies but depends on temporary, state-funded infrastructure. In contrast, Hajj follows a structured, revenue-driven model with mandatory fees, high-end hospitality, and year-round Umrah tourism, ensuring continuous financial growth and permanent employment opportunities.The study highlights policy recommendations to strengthen pilgrimage economies through sustainable infrastructure, digital advancements, and public-private partnerships. By comparing these models, it offers valuable insights for policymakers seeking to maximize long-term economic benefits from religious tourism while ensuring sustainable development.