Intake structure for saddle-ride type vehicle

An intake structure for a saddle-ride type vehicle (10) for increasing the degree of freedom of the length of a duct associated with an intake air cleaner case (30) disposed below a seat (13). An air taking-in port (41) is provided in a lid member (40) serving as a portion of an upper wall (35) of an air cleaner case (30) located below a seat (13). A concave portion (42) is formed on an upper wall surface communicating with the taking-in port (41). The concave portion (42) and a bottom plate (13b) of the seat (13) facing the concave portion (42) forms a pseudo duct-like intake passage communicating with the taking-in port (41). A side cover (15) is provided with a stepped surface extending toward the inside of a vehicle (10) from an external surface thereof. An opening (15h), opened downwardly, is provided in the stepped (15d) surface to improvement in intake performance and to reduce dust and the like from entering.