Charkhi Dadri Vidhan Sabha constituency (Hindi: दादरी विधानसभा निर्वाचन क्षेत्र) is one of the 90 Vidhan Sabha constituencies in Haryana state in northern India.
Dadri (constituency number 56) is one of the 6 Vidhan Sabha constituencies located in Bhiwani district. This constituency covers the Dadri municipal committee and part of Dadri tehsil.
Dadri is part of Bhiwani-Mahendragarh Lok Sabha constituency along with eight other Vidhan Sabha segments, namely, Loharu, Badhra, Tosham and Bhiwani in this district and Ateli, Mahendragarh, Narnaul and Nangal Chaudhry in Mahendragarh district.