An air cleaner includes a first blowing device having a first inlet and a first outlet, a second blowing device disposed above the first blowing device and having a second inlet, and a partition plate disposed between the first outlet and the second blowing device. The first blowing device includes a case forming the first inlet and opened in an upper side, a discharge guide device disposed in the opened upper side of the case and forming the first outlet, a first fan disposed inside the case and forming an air flow from the first inlet to the first outlet, and a splitter disposed between the partition plate and a discharge guide device and extending upward from the discharge guide device in a radial direction of the discharge guide device to separate an air flow discharged from the first outlet and guide the air flow in the radially outward direction.