This book highlights recent trends and results based on the focused investigations on zinc oxide tetrapods, a specific morphology of ZnO with intriguing structural and optoelectronic features viable for several novel applications. First, it presents a comprehensive introduction to ZnO tetrapods, explaining the unique characteristics that prompt interest for research and real-time applications. It highlights the facile and reliable preparation techniques and methods to overcome challenges of scalability and reproducibility, followed by interesting optical, electronic, and mechanical properties of this nanostructured material. A special section is devoted to computational modeling, which explains the theoretical concept of energy band structures, defect states and their corresponding functionalities. In addition, it highlights applications across a wide range of fields like optoelectronics, environmental remediation science, biomedicine, and energy technologies, including novel trends, such as hybrid materials and green synthesis pathways. On this interdisciplinary book, both foundational knowledge and forward looking perspectives are presented and discussed in detail, which can function as a vital resource for researchers, academicians, and professionals researching and intending to utilize ZnO tetrapods in various domains of science, engineering, and technology.