CP violation effects in e(+)e(-) --> t(t) over barg$ are exam ined. CP
-odd, T-N-odd and T-N-even observables can both be used to extract inf
ormation on the real and imaginary parts of Feynman amplitudes. The tw
o Higgs doubler model with CP violating phase from neutral Higgs excha
nge is used to illustrate possible effects. In this particular model t
he expected luminosity of the future colliders seems to fall short by
about one order of magnitude to detect such asymmetries.