The National Ocean Sciences Bowl (NOSB) is a program that uses a quiz bowl competition, along with supporting educational activities for students and teachers, to develop the next generation of ocean scientists, stewards, and leaders. The NOSB is managed by the Consortium for Ocean Leadership, a Washington, D.C. based non-profit and supported by 25 research institutions, federal laboratories, state Sea Grant programs, and aquaria across the United States. The NOSB develops knowledgeable ocean stewards that understand the ocean’s impact on daily life and the importance of scientific research. The program fosters use of the ocean as an interdisciplinary vehicle to teach science and mathematics and encourages its inclusion in curricula. It encourages and support the involvement of under-represented and geographically diverse communities in ocean science. Lastly, it provides students interactive education that develops critical thinking and skills for the workforce and exposes them to ocean science professionals and career opportunities. These objectives are achieved through a fast-paced and engaging quiz bowl competition that is supplemented by career mentoring events, yearly competition themes, and experiential field trips to help students gain a broader and deeper understanding of ocean science content than they would in a traditional classroom setting. The primary audience of the NOSB is high school students and teachers (formal educators serving as coaches). Secondary audiences include the academic and professional ocean science community, many of whom serve as mentors or volunteers, and students who benefit from the participation of their teachers and schools even though they have not participated in a competition. Each year, the NOSB directly engages approximately 2,000 students from 325 schools in 34 states plus the District of Columbia through 25 regional competitions. The top team from each region then competes in the national final competition, which changes location each year. The NOSB’s focus on ocean science is crucial as our nation’s need for an ocean-literate society is increasing given growing environmental challenges as well as opportunities in a sustainable ocean-based economy. Formal coursework in ocean and environmental sciences is not prevalent in most U.S. schools; thus, the NOSB fills a critical role in engaging high school students in ocean learning and expands their knowledge of the ocean’s role in issues affecting our nation’s citizens, such as a changing climate, extreme weather events, coastal resilience, food provision and security, and our economy. The NOSB supports NOAA’s Education Strategic Plan goals of a Science-Informed Society, Conservation and Stewardship, and Future Workforce. NOSB students are introduced to ocean-related STEM fields and career pathways. The NOSB also engages all participants in the competition and other program elements, resulting in ocean science and environmental awareness and increased interest in stewardship of ocean resources within these audiences. The program operates with the involvement of the ocean science research, education, and technology community, including NOAA laboratories and Sea Grant programs.