April 23rd National Sovereignty and Children's Day is 104 years old. This holiday was dedicated to the children of the world by Mustafa Kemal Atatürk, the founder and first president of the Republic of Türkiye.

Again, this holiday was formed by the spontaneous merger of April 23rd National Day, which was started to be celebrated in the first year of the opening of the Turkish Grand National Assembly (TBMM), and the Hâkimiyet-i Milliye (National Sovereignty) Day, which was first accepted as November 1st after the abolition of the sultanate on November 1st, 1922, and then merged with April 23rd National Day in 1935, and April 23rd Children's Day, which was declared by the Himaye-i Etfal Society in 1927 and the first of which was organized under the auspices of Atatürk. In 1980, the National Security Council officially named this holiday "April 23rd National Sovereignty and Children's Day".

National Sovereignty and Children's Day is one of the official holidays of the Republic of Türkiye and the Turkish Republic of Northern Cyprus. In addition to Turkey and TRNC, it is also celebrated in the Republic of Kosovo as "April 23rd Kosovo Turks National Day".