Kde domov můj? (; in English: Where is my home?) is a piece of music written by the composer František Škroup and the playwright Josef Kajetán Tyl.
The piece was written as a part of the incidental music to the comedy Fidlovačka aneb Žádný hněv a žádná rvačka (Fidlovačka, or No Anger and No Brawl). It was first performed by Karel Strakatý at the Estates Theatre in Prague on December 21, 1834. The original song consists of two verses (see below). Although J. K. Tyl is said to have considered leaving the song out of the play, not convinced of its quality, it soon became very popular among Czechs and was accepted as an informal anthem of a nation seeking to revive its identity within the Habsburg Empire.
Soon after Czechoslovakia was formed in 1918, the first verse of the song became the Czech part of the national anthem, followed by the first verse of the Slovak song Nad Tatrou sa blýska. Because of the linguistic and ethnic diversity of the First Republic, official translations were made into Hungarian and German as well.
With the split of Czechoslovakia in 1993, the Czechoslovak anthem was divided as well. While Slovakia extended its anthem by adding a second verse, the Czech Republic's national anthem was adopted unextended, in its single-verse version.
In 1882, Antonín Dvořák used Kde domov můj? in his incidental music to the František Ferdinand Šamberk play Josef Kajetán Tyl, Op. 62, B. 125. The overture is often played separately as a concert work entitled Domov můj (My Home).