St. Gregory the Great Parish, Oshawa - St. Gregory the Great Parish, Oshawa

Image of Front Door of St. Gregory's Church

Welcome to St. Gregory the Great

Welcome to St. Gregory's. Our church is located at the southwest corner of Adelaide and Simcoe Streets, in central Oshawa.

Totus Tuus Summer Camp

Day program: grades 1-6, Monday to Friday 9am-2:30pm, July 08-12, 2024, St Gregory’s Hall Evening program: grades 7-12, Sunday to Thursday, 7pm-9pm, July...

Interior vew of St. Gregory's Church facing the sanctuary

Mass Schedule

Mass Times and Confession Times

Image of the Facade of St. Gregory the Great

Parish Financial Report

Financial information for 2023

Archbishop's visit, 2024

Archbishop's visit to St Gregory and Holy Cross

Life Teen Camp 2024

Each summer, our parish community collaborates with and hosts other parish's high schoolers and their leaders at Life Teen Camp

Tabernacle at St. Gregory with word "Salus" visible

First Communion Program

Find out details of our parish's program for preparation for First Holy Communion and Reconciliation.

Image of Chrism Vial and Oil stock for use in anointing

Confirmation Program

Find out more about our parish's program for the preparation for the Sacrament of Confirmation.

Letters of Reference

Letters of Reference for Catholic Teacher Applicants

John the Baptist closeup of small bronze

Sacrament of Baptism

Find out more about preparing for the Sacrament of Baptism for your child.

Mass Schedule

Sunday 8am and 9:30am. Tuesday 12.10pm and Friday 7pm.

Confession Schedule

Confession: Friday 6:00 pm -6:45 pm.

Latest News

Pope Francis Elevates Archbishop Francis Leo to the College of Cardinals

Pope Francis has announced that Metropolitan Archbishop of Toronto, the Most Rev. Francis Leo will be elevated to...

The Mystery of God

What? The Mystery of God: Who God Is and Why He Matters Who & why? We...

Youth Pilgrimage 2025

Jubilee of Youth 2025 Pilgrimage - From July 23, 2025 to August 5, 2025 Youth Pilgrimage Poster...

Marriage Prep Course at St. Leo the Great Catholic Church

About our marriage prep course that will be taking place at St. Leo the Great Catholic Church...

Events

Diving Deeper into Our Faith – Adult Formation Program

Are you interested in learning more about our Catholic faith? Do you...

Sep-18-2024 - Apr-02-2025

St. Peter's Church, 840 Bathurst St.

Unlocking the Mystery of the Bible

Beginning on Thursday, Oct. 17 at 7 p.m., our fall Bible...

Oct-17-2024 - Dec-05-2024

St. Gertrude's Parish, 690 King St., Oshawa or Zoom

Be Filled Seminar

The Shalom Catholic Community is a vocation within the Catholic Church. In...

Oct-19-2024 - Nov-30-2024

879 St Clair Ave. W., Toronto

Bible Study on the Book of Prophet Jeremiah

The Mustard Seed Ministry, the Parish Adult Faith Formation Program of St...

Oct-21-2024 - Jun-23-2025

Virtual event via Zoom

Implications of MAiD

We cordially invite you to join us Wednesday, Nov. 6, 2024 at...

Nov-06-2024 - Nov-06-2024

St. John's Mission, 155 Broadview Ave., Toronto

Kristallnacht, Kindertransport and Return to Life: A Conversation with Holocaust Survivor Renate Zelovic

A VIRTUAL EVENT RECOMMENDED BY THE OFFICE FOR PROMOTING CHRISTIAN UNITY AND...

Nov-07-2024 - Nov-07-2024

Online

Search Me, O God: A Musical Exploration of the Psalms

AN ONLINE EVENT RECOMMENDED BY THE OFFICE FOR PROMOTING CHRISTIAN UNITY AND...

Nov-07-2024 - Nov-07-2024

Zoom

Holy Family Christmas Bazaar

Holy Family Christmas Bazaar is selling quilts, Christmas decoration, table runners, hand...

Nov-08-2024 - Nov-09-2024

91 Ribblesdale Dr., Whitby, L1N 6Z3

Project Rachel Retreat

Women suffering after abortion need support. If this is your pain, or...

Nov-08-2024 - Nov-10-2024

St. Mary's Refuge, Madoc, Ont.

POUR OUT Adoration Night

All of us are called to be saints. No matter your past...

Nov-08-2024 - Nov-08-2024

Merciful Redeemer Parish, 2775 Erin Centre Blvd.

A silent Ignatian Retreat for Women with Fr. John Sullivan, SJ

A Silent Ignatian Retreat for Women - "O Deus Ego Amo Te." A...

Nov-08-2024 - Nov-10-2024

Manresa Jesuit Spiritual Renewal Centre

Inner Healing Fasting Retreat - Nov. 9 and 10, 2024

Inner Healing Fasting Retreat is scheduled for Nov. 9 & 10, 2024...

Nov-09-2024 - Nov-10-2024

69 William St., Toronto

Proclaiming Christ

Listening to the Voice of God and Following Through

Visit Us

194 Simcoe Street North
Oshawa, ON
L1G 4S9

Office/Mailing Address
194 Simcoe Street North
Oshawa, ON
L1G 4S9

t: 905.723.8141
e: stgregorythegreat@archtoronto.org

Get Directions

Clergy

Rev. Marijan Sisko
Pastor

Rev. Edward McGovern
Hospital Chaplain

Deacon David MacInnis
Deacon Assistant

Parish Staff

Jacqui Martin
Secretary
secretary@stgregorythegreat.ca
905-723-8141

Living Our Baptism in Our Parish

Help to build up the life we have received in Christ by sharing the gifts you have received: In Christ's Spirit, Through your human talents, and with your material resources.

Prayer

Join in prayer in new ways with others.

Human Gifts and Service

Use your gifts to build up the life of the Gospel.

Material Support

Support the parish and charities who further the mission of Christ.

Contact the Parish

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194 Simcoe Street North, Oshawa, ON L1G 4S9

t: 905.723.8141

stgregorythegreat@archtoronto.org