Kyrgyz or Kirgiz, also Kirghiz, Kyrghiz, Qyrghiz (Кыргызча or Кыргыз тили, قىرعىز تىلى, Kırgızça or Kırgız tili) is a Turkic language and one of the two official languages of Kyrgyzstan, the other being Russian. It is a member of the Kazakh-Nogai subgroup of the Kypchak languages, and modern day language convergence has resulted in an increasing degree of mutual intelligibility between Kyrgyz and Kazakh.

Kyrgyz is spoken by about 4 million people in Kyrgyzstan, China, Afghanistan, Kazakhstan, Tajikistan, Turkey, Uzbekistan, Pakistan and Russia. Kyrgyz was originally written in the Turkic runes, gradually replaced by an Arabic alphabet (in use until 1928 in USSR, still in use in China). Between 1928 and 1940, the Latin-based Uniform Turkic Alphabet was used. In 1940 due to general Soviet policy, a Cyrillic alphabet eventually became common and has remained so to this day, though some Kyrgyz still use the Arabic alphabet. When Kyrgyzstan became independent following the Soviet Union's collapse in 1991, there was a popular idea among some Kyrgyz people to make transition to the Latin alphabet (taking in mind a version closer to the Turkish alphabet, not the original alphabet of 1928-1940), but the plan was never implemented.