A knitting machine for hosiery comprising a needle holder having a plurality of vertical slots accommodating each a needle movable along the corresponding slot in order to form knitting, and a device for feeding the yarn to the needles, arranged above the needle holder and supporting at least one elongated vertical yarn finger, its lower end being located proximate to the needle work area and having a passage for dispensing the yarn to be fed to the needles. The device comprises a supporting block arranged laterally and above the needle holder to support a rotatable intermediate element. The intermediate element supports, so that it can rotate a corresponding yarn finger.