  The gravitational memory effects of Chern-Simons modified gravity are
considered in the asymptotically flat spacetime. If the Chern-Simons scalar
does not directly couple with the ordinary matter fields, there are also
displacement, spin and center-of-mass memory effects as in general relativity.
This is because the term of the action that violates the parity invariance is
linear in the scalar field but quadratic in the curvature tensor. This results
in the parity violation occuring at the higher orders in the inverse luminosity
radius. The scalar field does not induce any new memory effects that can be
detected by interferometers or pulsar timing arrays. The asymptotic symmetry is
group is also the extended Bondi-Metzner-Sachs group. The constraints on the
memory effects excited by the tensor modes are obtained.
