This review article provides a comprehensive overview of zonal flow phenomena in plasmas, emphasizing both laboratory and planetary zonal flows. It discusses the status of theory, numerical simulations, and experiments relevant to zonal flows, with a focus on understanding the dynamics of drift wave-zonal flow turbulence. The review highlights the role of zonal flows in regulating and suppressing drift wave turbulence and transport, and their implications for plasma confinement in fusion devices. Key topics include the generation of zonal flows by drift waves, the back-interaction of zonal flows on drift waves, and various feedback loops that govern the system's self-organization. The article also explores the application of zonal flow phenomena in planetary atmospheres, such as the zonal belts of Jupiter and the superrotation of Venus. Additionally, it delves into advanced theoretical models, extensions of the theoretical framework, and experimental studies of zonal flow physics in magnetically confined plasmas. The review concludes with a discussion of future research directions and the impact of zonal flow physics on fusion research.This review article provides a comprehensive overview of zonal flow phenomena in plasmas, emphasizing both laboratory and planetary zonal flows. It discusses the status of theory, numerical simulations, and experiments relevant to zonal flows, with a focus on understanding the dynamics of drift wave-zonal flow turbulence. The review highlights the role of zonal flows in regulating and suppressing drift wave turbulence and transport, and their implications for plasma confinement in fusion devices. Key topics include the generation of zonal flows by drift waves, the back-interaction of zonal flows on drift waves, and various feedback loops that govern the system's self-organization. The article also explores the application of zonal flow phenomena in planetary atmospheres, such as the zonal belts of Jupiter and the superrotation of Venus. Additionally, it delves into advanced theoretical models, extensions of the theoretical framework, and experimental studies of zonal flow physics in magnetically confined plasmas. The review concludes with a discussion of future research directions and the impact of zonal flow physics on fusion research.