Koigi

Koigi may refer to different places in Estonia:
 * Koigi, Järva County, village in Järva Parish, Järva County
 * Koigi Parish, former municipality in Järva County
 * Koigi (air base) (also Nurmsi Airfield), former soviet air base in Estonia
 * Koigi, Rapla County, village in Rapla Parish, Rapla County
 * Koigi, Saare County, village in Saaremaa Parish, Saare County