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 CKM matrix elements $|V_{td}|$, $|V_{ts}|$, $|V_{tb}|$, and anomalous $Wtb$ couplings, flavor-changing neutral current $tu\gamma/Z$ couplings, and flavor-changing neutral current $t \to uH$ branching ratios.