Sts. Cyril and Methodius School in Plovdiv, Educational institution in central Plovdiv, Bulgaria.

Sts. Cyril and Methodius School, the former Plovdiv Boys' Gymnasium, stands on 11 May Square. Its present building was opened on 20 October 1885 in the presence of Prince Alexander I of Battenberg and was built to the design of architect Pietro Montani. The school had already moved in 1868 into the Yellow School in the old town, next to the Roman theatre and the Dormition church.

The school was founded in 1850 by Nayden Gerov and became the first Bulgarian high school, marking the start of modern education in the country. This establishment helped shape a new era of learning and academic development.

The school was the first in the world to bear the name of Cyril and Methodius, and on 24 May 1851, on Nayden Gerov's initiative, it held the first celebration honouring the two Slavic apostles. That date is now a national holiday in Bulgaria and North Macedonia.

The school stands on ploshtad "11 May" in central Plovdiv, a short walk from the Roman Theatre and the Old Town. It is a working school, so visits depend on academic events or guided tours arranged in advance; the Yellow School building of 1868, now used by the Academy of Music, Dance and Fine Arts, stands in the Old Town next to the Roman Theatre and the Church of the Dormition.

The school was the first in the world to bear the name of Saints Cyril and Methodius, and on 24 May 1851 it held the first celebration honouring the two Slavic apostles, a date now a national holiday in Bulgaria and North Macedonia.