Category 1

Category 1 can refer to:


 * Category 1 cable, an electrical standard for communications wiring
 * Category 1 tropical cyclone, on any of the Tropical cyclone 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