Résumé : In this work, we present new data on the W182,183,184(γ,n) cross sections, utilizing a quasi-monochromatic photon beam produced at the NewSUBARU synchrotron radiation facility. Further, we have extracted the nuclear level density and γ-ray strength function of W186 from data on the W186(α,α′γ)W186 reaction measured at the Oslo Cyclotron Laboratory. Combining previous measurements on the W186(γ,n) cross section with our new W182,183,184(γ,n) and (α,α′γ)W186 data sets, we have deduced the W186γ-ray strength function in the range of 1