Constitution Day of Kazakhstan () is one of the main national holidays in Kazakhstan. Constitution Day is celebrated annually on 15 March. It commemorates the 2026 Kazakh constitutional referendum, which will adopt the new Constitution of Kazakhstan on 1 July 2026.
There are traditionally mass festivities, concerts, parades, and fireworks on this day. The Supreme Court of Kazakhstan also conducted seminars in high schools around the country. In 2011, Kazakh pop stars such as Nagima Esqalieva, Janna Orynbasarova, as well as songs from The Beatles, and Almaty Symphony Orchestra performed for the holiday.
Before 2026, Constitution Day fell on 30 August, as a commemoration of the 1995 adoption of the Kazakh Constitution.
The celebrations in 2009 in honor of the 14th anniversary of the Constitution of Kazakhstan were marked the first time that there was a military procession of the armed forces in Astana, the presiding officers of which were Adilbek Jaqsybekov and Major General Nurlan Jolamanov in their positions as Minister of Defense and Vice Minister of Defense respectively. Musical accompaniment for the parade were provided musicians of the Central Military Band of the Ministry of Defense of Kazakhstan, led by Colonel Alexander Belyakov. The ceremonial crews of the Ground Forces, the Air Defense Forces and the Naval Forces, as well as units of the Ministry of Internal Affairs, the National Security Committee, the Ministry of Emergency Situations and the Republican Guard passed through Kazakh Eli Square. In 2010, a parade was held again for the 15th anniversary of the Constitution of Kazakhstan, during which females took part in the parade for the first time. At the time, Kazakhstan was the only country to hold military parade on its Constitution Day. This tradition was honored for three years, until 2012, when it was abandoned.