A control apparatus for a rotary electric machine includes at least one of a first corrector and a second corrector. The first corrector corrects a first command voltage as a function of a deviation between a command value for a field current and an actual value of the field current. The second corrector corrects a second command voltage as a function of a deviation between a command value for a d-axis component of an armature current and an actual value of the d-axis component of the armature current. At least one of the first corrector and the second corrector makes the d-axis component of the armature current and the field current non-interfere with each other.