High Altitude Balloons explores the exciting world of near-space exploration using stratospheric balloons, offering a cost-effective alternative to traditional satellites for scientific research and communication. These balloons have been used for meteorological research since the early 20th century, but recent advancements have dramatically expanded their capabilities. Readers will discover how high-altitude balloons are transforming fields like atmospheric research, remote sensing, and even citizen science, offering versatile platforms for various applications. The book takes a practical approach, guiding readers through payload design, mission planning, and execution, emphasizing the importance of understanding atmospheric science and balloon flight dynamics. It showcases real-world examples and case studies from NASA, NOAA, and university-led projects. The book begins with the fundamentals of stratospheric ballooning, then progresses to cover payload integration, mission planning, and various applications, providing the knowledge and tools necessary to design and execute balloon missions.