The Constitution of the People's Democratic Republic of Ethiopia (Amharic: የኢትዮጵያ ሕዝቦች ዴሞክራሲያዊ ሪፐብሊክ ሕገ መንግሥት, romanized: Ye-Ītyōṗṗyā Həzbāwī Dīmōkrāsīyāwī Rīpeblīk Ḥige Menigišit), also known as the 1987 Constitution of Ethiopia, was the third constitution of Ethiopia, and went into effect on 22 February 1987 after a referendum on 1 February of that year. Its adoption inaugurated the People's Democratic Republic of Ethiopia (PDRE).