St. Sebastian's Church, Katuwapitiya (Sinhala: ශාන්ත සෙබස්තියන් දේවස්ථානය කටුවපිටි, romanized: Śānta Sebastiyan Dēvasthānaya,Katuwapitiya; Tamil: புனித செபஸ்தியார் தேவாலயம், கடுவபிடிய, romanized: Puṉita Cepastiyāṉ Tēvālayam, Katuwapitiya) is a Roman Catholic church in the Archdiocese of Colombo.

On 21 April 2019, Easter Sunday, the church was one in a series of targets of a string of bomb blasts across Sri Lanka.

[2] Media reported at least 93 people killed at the church,[3] UNICEF reported that 27 children died and 10 children were injured.

President Maithripala Sirisena visited the church to inquire after the situation and inspect damages.

[5] The victims' funeral Mass was conducted at the church premises by Cardinal Malcolm Ranjith.