A vibration isolator includes an inner tube (11), an outer tube (12) surrounding the inner tube (11) from a radial outer side of the inner tube, and an elastic body (13) coupling the inner tube (11) and the outer tube (12). Multiple pressure-absorbing fluid chambers (35, 36), whose walls are partly formed by the elastic body (13), are disposed inside the outer tube (12), and include a pair of first pressure-absorbing fluid chambers (35) interconnected through first restricting passages (37), and a second pressure-absorbing fluid chamber (36) connected to an auxiliary fluid chamber (28), in which a fluid is filled, through a second restricting passage. The pair of first pressure-absorbing fluid chambers (35) are disposed to sandwich the inner tube (11) therebetween. The second pressure-absorbing fluid chamber (36) is arranged in parallel to the inner tube (11) in an orthogonal direction (C) perpendicular to both an axial direction of the inner tube (11) and a sandwiching direction (B) in which the inner tube (11) is sandwiched between the pair of first pressure-absorbing fluid chambers (35). The inner tube (11) runs along overall lengths of the pair of first pressure-absorbing fluid chambers (35) and the second pressure-absorbing fluid chamber (36) in the axial direction.