Significant advances in field monitoring, laboratory experiments and computational modelling of river ice processes havebeen made in the past few decades. Different ice processes, such as frazil ice evolution, ice-cover formation, ice-coverbreak-up and ice jamming, have been studied, as well as linkages of ice regime with water quality and sediment transport.There has also been extensive research on understanding hydro-climatic drivers and controls of river ice processes alongwith assessments of climatic effects on river ice hydrology. Recent studies have focused on evaluating the impact of futureclimate on more complex ice processes, such as ice jamming and ice-jam flooding. These efforts have not only improved pro-cess understanding but have also led to innovations in tools, methods and models. This Special Issue acknowledges theserecent advances and highlights some of the novel contributions.