A vibration isolating apparatus includes: a first mounting member; a second mounting member; an elastic body interposed between the first mounting member and the second mounting member; a main liquid chamber filled with a liquid; a first sub-liquid chamber separated from the main liquid chamber by a partition wall member interposed between the main liquid chamber and the first sub-liquid chamber, at least a portion of an inner wall of the first sub-liquid chamber being provided to be deformable; a first orifice formed in the partition wall member and provided for communication between the main liquid chamber and the first sub-liquid chamber; a second sub-liquid chamber formed in the partition wall member so as to face the main liquid chamber; an elastic membranous body formed into the shape of a membrane and provided to separate the main liquid chamber and the second sub-liquid chamber from each other; and a second orifice provided for communication between the first sub-liquid chamber and the second sub-liquid chamber and provided such that a transit resistance of a liquid in the second orifice is smaller than that in the first orifice. This makes it possible to reliably reduce vibrations in a range from low frequencies to high frequencies.