Introduction: This study delves into the intersection of frugal innovations and the Blue Economy, exploring their pivotal role in fostering sustainable development within the shrimp farming sector in Ceará, Brazil. Method: The approach was a case study based on interviews with 14 participants in 12 companies, document analysis, and field visits. Data analysis was qualitative through content analysis with the help of NVivo14 software. Results: The study identifies ten frugal innovations characterized by features that contribute both directly and indirectly to the sustainable development of the shrimp farming sector in the specified region. Conclusion: Examined through the lens of the Blue Economy, the frugal innovations within the East Coast and Vale do Jaguaribe macro-regions in the State of Ceará establish direct and indirect connections with the achievement of Sustainable Development Goals 1, 2, 3, 4, 8, 9, 10, 11, 12, 14, 15, 16, and 17.