The Sibelius Academy (Finnish: Taideyliopiston Sibelius-Akatemia, Swedish: Sibelius-Akademin vid Konstuniversitetet) is part of the University of the Arts Helsinki and a university-level music school which operates in Helsinki and Kuopio, Finland. It also has premises in Järvenpää and a unit in Seinäjoki. The Academy is the only music university in Finland. It is among the biggest European music universities with roughly 1,400 enrolled students. In 2022, the Sibelius Academy was ranked 22nd globally in the field of performing arts by the QS World University Rankings by Subject.

The Sibelius Academy is the organizer of the International Maj Lind Piano Competition and one of the organizers of the International Jean Sibelius Violin Competition held every five years in Helsinki.

The academy was founded in 1882 by Martin Wegelius as Helsingfors musikinstitut ("Helsinki Music Institute") and renamed Sibelius-Akatemia in 1939 to honour its own former student and Finland's most celebrated composer Jean Sibelius. In 2013, the academy merged with two formerly independent universities, Helsinki Theatre Academy and Academy of Fine Arts, Helsinki, to form the University of the Arts Helsinki.

Between 2015 and 2017 the Parliament of Finland met at the Academy while its building was undergoing renovation.

The primary degree at the Sibelius Academy is the Master of Music (MMus) degree. The school also offers postgraduate degrees with artistic and research options. The postgraduate degrees are the Licentiate of Arts in Music Lic.A. (Mus.) and the doctoral degree of Doctor of Arts in Music D.A. (Mus.)

The Academy offers the following degree programmes:

Junior Academy is for highly skilled young musicians to study with top level professionals before entering a university.