CP violating electron-nucleon interactions and the resulting atomic electric dipole moments (EDM) are studied in several models. It is demonstrated that in the standard model these interactions are very small and are well below the experimental upper bounds. In multi-Higgs doublet models, the four-fermi interactions, can be quite large. In some range of parameters, the contribution of these interactions to the atomic EDM can exceed the contribution of the electron EDM. In leptoquark models the contribution from the tensor interaction is always the dominant one. 20 refs.