The International Code of Nomenclature for algae, fungi, and plants (ICN) is a set of rules and guidelines that govern the naming of these organisms. It ensures that each species has a unique and universally accepted scientific name, which helps avoid confusion in the scientific community. The code is essential for the classification and identification of biodiversity. The ICN is regularly updated to reflect new discoveries and changes in taxonomy. It covers various aspects, including the principles of naming, the formation of names, and the procedures for publishing new names. This code is crucial for researchers, botanists, and mycologists working with algae, fungi, and plants.