This hand drying device is provided with: a main body (30); an electrically-driven air blower (2) provided inside the main body (30), at a front surface (30a) side; and an air-outlet nozzle (3) provided to an undersurface (21). The undersurface (21) is an inclined surface slanting upward from a rear surface (30b) to the front surface (30a). Furthermore, a portion of an intake air duct (9) from a bottom-surface inlet (7) to a fan inlet (6) is provided along the undersurface (21). A filter case (11) intersecting the intake air duct (9) is disposed in the intake air duct (9) along the undersurface (21).