Kaykaus, Keykavus, Kai Kaus, Keikavoos, or Keykavos (), may refer to:

People

* Kay Kāvus, legendary king * Keikavus (Ziyarid), ruled from c. 1050 to 1087, wrote the ''Qabus-nama'' * Kai Ka'us I (Paduspanid ruler), ruled from 1168 to 1184 * Kaykaus I (died 1220) * Kaykaus II (died 1279/1280) * Keykavus (Shirvanshah), ruled from 1294 to 1317 * Rukunuddin Kaikaus, Sultan of Bengal * Ahmad Kaikaus (born 1961), Bangladeshi civil servant

Places