Ìsèdó (Ìsẹ̀dó or Ìsẹ̀dó-Olúmọ̀) is an ancient Igbomina kingdom in northeastern Yorubaland of Nigeria. Ìsẹ̀dó was founded as a new city-state several centuries ago (between 1250 to 1400) by Ọba'lumọ, a Prince of the ancient Oba civilization (whose name or appellation is contracted from "Ọba Olumọ" meaning "knowledgeable king", or "king of the lords of knowledge"). Ìsẹ̀dó is fully known and called "Ìsẹ̀dó-Olúmọ̀" using its founder-king's name as an identifier suffix. Ọba'lumọ, emigrated from the ancient Ọ̀bà civilization in northeastern Yorubaland.