The Constitution of 1921 (Ottoman Turkish: Teskilât-i Esasiye Kanunu; ) was the fundamental law of Turkey for a brief period from 1921 to 1924. The first constitution of the modern Turkish state, it was ratified by the Grand National Assembly of Turkey in January 1921. It was a simple document consisting of only 23 short articles. In October 1923 the constitution was amended to declare Turkey to be a republic. In April the following year the constitution was replaced by an entirely new document, the Constitution of 1924.