Mammad Hasan Jafargulu oglu Hajinski (Azerbaijani: M?mm?d H?s?n C?f?rqulu oglu Hacinski; March 3, 1875 – February 9, 1931) was an Azerbaijani architect and statesman.
He also served as a Minister for Foreign Affairs of Azerbaijan Democratic Republic (ADR) and the last Prime Minister of ADR.