Highlights of the rich electroweak and top quark physics program at future LHeC and FCC-eh colliders are presented. The studies involve high precision analyses of the weak mixing angle, vector and axial-vector weak neutral couplings of light quarks, the polarization asymmetry in neutral current scattering, the CKM matrix element $|V_{tb}|$ and anomalous Wtb couplings, flavor-changing neutral current tuγ couplings, and flavor-changing neutral current t → uH branching ratios.