Katmai may refer to: Katmai National Park and Preserve, a park in Alaska Mount Katmai, a volcano in the Katmai Park in Alaska; the site of a colossal 1912 eruption Katmai (microprocessor), a Pentium III computer microprocessor core , an ammunition ship in the US Navy from 1945 to 1973 Katmai Bay, a United States Coast Guard cutter Microsoft SQL Server 2008's codename