I20

I20, I 20 or I-20 may refer to:
 * Interstate 20, a highway in the southeastern United States
 * I-20 (form), a United States government document that provides supporting information for the issuance of a student visa or change of status
 * I-20 (rapper) (born 1975), American rapper
 * I-20 (sailing scow), a sloop rigged scow with a spinnaker
 * I2O, a defunct computer I/O specification
 * Hyundai i20, a car
 * JAPANESE SUBMARINE I-20, a Type C submarine
 * Kalmar Regiment (1816–1892), a Swedish infantry regiment
 * Västerbotten Regiment (1893–1973), a Swedish infantry regiment