Category 1 or Category One may refer to:
Category 1 cable, an electrical standard for communications wiring Category 1 tropical cyclone, on any of the Tropical cyclone intensity scales Category 1 pandemic, on the pandemic severity index, an American influenza pandemic with a case-fatality ratio of less than 0.1% Category 1 winter storm, on the Northeast snowfall impact scale and the Regional snowfall index Any of several winter storms listed at list of Northeast snowfall impact scale winter storms Category 01 non-silicate mineral - native element minerals "Category One" (Battle for Dream Island), a 2024 web series episode
See also Class 1 (disambiguation) - class/category equivalence (for labeling) Type 1 (disambiguation) - type/category equivalence (for labeling) Group 1 (disambiguation) - group/category equivalence (for labeling) Category I (disambiguation) - Roman/Arabic numbering equivalence