Keto can refer to: The Keto people, an ethnic group of the Siberian North. Keto or Ceto, a sea goddess in Greek mythology. The keto group, the functional group in the chemical compounds ketones. Ketoconazole, a medication that can inhibit the production of testosterone in both the testes and adrenal gland. Ketones. Keto Foundation, a non profit organization that attempts to assure knowledge management necessary to promote the responsible use of the coastal-marine ecosystems in Costa Rica. www.fu… (More on Keto)