Ichi


 * Ichi, the number one in Japanese numerals
 * Ichi (film), a 2008 Japanese film
 * Ichi (scarification), a type of facial scarring traditionally used by the Igbo people of West Africa
 * Ichi, Iran, a village in Isfahan Province, Iran
 * Ichi, Nigeria, a town in Ekwusigo Local Government Area, Nigeria
 * International Classification of Health Interventions
 * Ichiro Suzuki or Ichi (born 1973), Japanese baseball player
 * ICHI (musician), musician and husband of Rachael Dadd
 * IChI (IUPAC chemical identifier), the original name for the International Chemical Identifier