St. Mary's church, Mattakkuliya parish is led by Rev. Fr. Ajith Perera OMI.

The church of St. Mary’s Mattakkuliya, dedicated to our Lady of the Immaculate conception which celebrated its 150th anniversary recently had its origins in the year 1861.

As the mission grew, the existing church was found inadequate to accommodate the growing population. In 1920 when Rev.Fr. Lagathu, parish priest residing at St. John's Modera, decided to build a new church for Mattakkuliya. In September of that year, Rev.Fr. Theodore Laboure, OMI was sent to assist Fr. Lagathu. The foundation of the new church was laid on 21 February, 1921.

Two-thirds of the parish which consists of 27 zones is surrounded by the Kelani river and is connected to Mutwal by land with the remaining one-third.

The population of the parish has grown by leaps and bounds since the early church and the parish census now records about six thousand five hundred.

Today we celebrate the Holy Mass in English, Sinhala and Tamil.

Today our ministries have grown under the leadership and guidance of our parish priest, Rev. Fr. Ajith Perera. The praise and worship conducted by Fr. Perera quenches the spiritual thirst of the parishioners.

The youth, the backbone of our church is led by the indefatigable parish priest who harnesses their talents to work for the greater glory of God - by encouraging the youth to join the different groups and societies. The charity services are carried out with the help of the Society of St. Vincent De Paul.

The Sunday school for students is also conducted in all three languages. Moreover, the youth are also motivated by the YCS.

Church has also created a platform for other groups and societies such as Legion of Mary, Rosa Mystica , Sacred Heart of Jesus to increase and strengthen the faith of the parishioners faith towards Mother Mary and Jesus. The children are guided in faith through the Holy Childhood Society.

As the mission grew, the existing church was found inadequate to accommodate the growing population. In 1920 when Rev.Fr. Lagathu, parish priest residing at St. John's Modera, decided to build a new church for Mattakkuliya. In September of that year, Rev.Fr. Theodore Laboure, OMI was sent to assist Fr. Lagathu. The foundation of the new church was laid on 21 February, 1921.

Presently the church is facing the challenge of serving the parishioners who are suffering from the current economic crisis. The church is also facing a huge challenge due to the vulnerability of the young and the elders who suffer from various addictions.