A vehicle cabin front portion structure has a steering column of a vehicle, an instrument panel in which a face blowout port is formed further toward a vehicle transverse direction outer side than the steering column, an air conditioner main body that is provided within the instrument panel, further toward a vehicle transverse direction central side than the steering column, a knee airbag device that is disposed at a vehicle lower side of the steering column, and that inflates and deploys a knee airbag toward a vehicle lower side of the instrument panel, and a face duct that extends from the air conditioner main body to the face blowout port via a route that passes a vehicle rear side of the knee airbag device.
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