Ottawa. Wheelchair-accessible church serving Ottawa South and Carleton University. Information provided on location, masses, bulletins, ministries, Catholic Deaf Community, calendar, and contact information.

Welland. Mass schedule, historical timelines, photos, contact information. In English and Polish.

Hamilton. Ethnic Slovak parish. Church schedule, history, news, bulletins and photo gallery. Information in English and Slovak. Requires JavaScript, frames, and graphics.

Courtice. Contact information, Mass schedule, historical timeline, parish directory, kids' pages.

Trenton (Quinte West). Provides a calendar of parish events, current bulletin, contact information, links to other Catholic sites, and access to articles concerning the faith.

Seat of the Diocese of London. Staff directory, Mass times, bulletin, photos.

Seat of the Diocese of Thunder Bay. Site lists history, event information and allows users to submit suggested prayers.

Williamstown. Also serves the mission parish of St. William's, in Martintown. Mass times, sacramental arrangements, recent bulletins (in PDF), news items, staff directory.

Barrie. Staff directory, Mass schedule, sacramental policies, bulletin, parish history, maps and directions.

Seat of the Archdiocese of Kingston. History, staff directory, times of services.

St. Catharines. Offers Mass in English and Korean. Mass times, recent bulletins (in PDF), parish organizations and ministries, historical timeline, portraits of pastors.

North Lancaster. Fully bilingual site (English-French). Contact information, Mass times.

Unionville. Mission statement, Mass schedules, parish organizations, photos, profile of the parish's patron saint. Uses frames.

Toronto. Regular mass times including monthly mass for the Pilipino community, Christmas and New Year's worship schedule. Clergy, past and present. Parish groups, how to become a parishioner.

Mississauga. Weekly bulletin, schedule of activities, staff directory. Some services are offered in Portuguese. Requires Flash; does not work in some browsers.

Sault Ste. Marie, Ontario. Also administers St. Aloysius Church in Gros Cap. Contact information, directions, schedule.

Amherstburg. Large multi-cultural Roman Catholic community. Staffed by the Basilian Fathers.

Mississauga. Served by the Carmelites. Contact information, schedules, history, staff.

Sault Ste. Marie, Ontario. Mission statement, history, directions, schedule.

Ottawa. Staffed by the Missionary Oblates. Information in English and Polish. Uses frames.

London. Mass times, staff, mission statement.

Mississauga. Staff, sacramental policies, important phone numbers, parish groups, Mass schedule.

Brampton. Operated by the Missionary Oblates of Mary Immaculate. Information about parish life, Mass and office hours, the pastor, and volunteer opportunities available both in Polish and English.