The Islamic Society of Finland () is an Islamic community registered in Finland founded in 1986, and registered in 1987, making it the second oldest Islamic congregation in Finland. It is located in downtown Helsinki, where it has a mosque. The Islamic Society of Finland is a member of the Federation of Islamic Organizations in Europe (FIOE). It also has a Qur'an school for children, and providing educational services about Arabic and Islamic studies for people of all ages. It also has grown in size quickly over the years, having 1,796 members in 2019, now with 4,344 reported in 2023. The societies building provides a wide array of facilities including, marriage services, fatwa advice, halal certificates, guidance and arrangement for both Hajj and Umrah, and Islamic funeral procedures.
In 2025 the center was awarded by the Ministry of Education and Culture of Finland in their general grant for assisting the activities of registered religious communities.
In 2010, was chosen as the new imam who suggested a reinforcement of education and organization of imam education among universities and in the home. In 2012, the Helsinki Times reported on his opinions about zoning changes making the construction of mosques nearly impossible, and that Finland only has one purpose-built mosque in Järvenpää, Finland because of these problems. Hajjar died on December 7, 2022.