To provide an intake device for an internal combustion engine which prevents a throttle valve and an ISC valve from causing icing and sticking.

A housing 10 forming an intake path 100 consists of an inner tube member 11 and an outer tube member 12, and both ends of the inner tube member 11 is surrounded by the outer tube member 12. Gaps 40, 41 are circumferentially between the inner tube member 11 and the outer tube member 12. An inlet 33a and an outlet 33b of a bypass 33 are opened in the inner peripheral surface of the inner tube member 11. When liquid water or oil intends to enter into the inner tube member 11 toward a throttle valve 20, the water or oil is accumulated in the gap 40 or 41, and therefore, it cannon enter into the inner tube member 11. Therefore, the throttle valve 20 and an ISC valve 32 are prevented from causing icing and sticking.