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.
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Interior vew of St. Gregory's Church facing the sanctuary
Mass Schedule
Mass Times and Confession Times
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Image of the Facade of St. Gregory the Great
Parish Financial Report
Financial information for 2022
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Totus Tuus Summer Camp
TotusTuus Summer Camp 2023
Totus Tuus Summer Camp is Coming to St. Gregory!
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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.
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Confirmation Program
Find out more about our parish's program for the preparation for the Sacrament of Confirmation.
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Letters of Reference
Letters of Reference for Catholic Teacher Applicants
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Sacrament of Baptism
Find out more about preparing for the Sacrament of Baptism for your child.
Tabernacle at St. Gregory with word "Salus" visible
Mass Schedule
Sunday 8am and 9:30am. Tuesday 12.10pm and  Friday 7pm.
Image of Sacred Heart in stained glass
Confession Schedule
Confession: Friday 6:00 pm -6:45 pm.
Latest News
Totus Tuus Summer Camp
Totus Tuus Summer Camp 2023
  Totus Tuus Summer Camp is Coming to St. Gregory! Youth of St. Gregory the Great and Holy...
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Letters of Reference for Catholic Teacher Applicants
If you are a teacher, or one of your children is currently studying to become a teacher in...
Poster Identifying items suitable for donation to St. Vincent de Paul, clothing
Bundle Up Sunday
The St. Vincent de Paul Society at St. Gregory's is conducting a Bundle Up Sunday on the...
Image of Front Door of St. Gregory's Church
Mass Schedule
Weekend Masses:Sunday 8:00 am & 9:30 am.  Weekday Masses:Tuesday  12:10 pm...
Events
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Windows on Theology Fall 2023 Course - Theology and the Arts

This course is offered every Wednesday from 11 a.m. to 12...

Sep-20-2023 - Nov-15-2023
Regis College
Candle and Prayer Hands
Feast of St. Padre Pio

Three Days of Events In Honor of St. Padre PioSeptember 21 -23...

Sep-21-2023 - Sep-23-2023
St. Padre Pio Parish, Kleinburg
Butterfly on a flower
IF YOU'RE HAPPY AND YOU KNOW IT - A GRATITUDE RETREAT

True happiness is an internal job. It's a conscious choice to...

Sep-22-2023 - Sep-24-2023
MOUNT CARMEL, 7020 STANLEY AVE. NIAGARA FALLS, ONT
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Newman Centre Alumni Association for Young Catholic Professionals

Reconnect with other Newman Alumni and join the Newman Alumni Association event...

Sep-23-2023 - Sep-23-2023
Newman Centre Catholic Mission
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How to Start a Catholic Moms Group Workshop

REGISTER NOW!The workshop will be facilitated by an experienced Mothers Group...

Sep-23-2023 - Sep-23-2023
St. Gregory’s Parish (Parish Hall) 122 Rathburn Rd.
World Day of Migrants and Refugees
109th World Day of Migrants and Refugees

The Archdiocese of Toronto together with the parish community of Jesus the...

Sep-24-2023 - Sep-24-2023
10350 Victoria Square Blvd, Markham, ON
Candle and Prayer Hands
Feast of the Holy Protectors

Feast of the Holy ProtectorsSts. Cosmas & Damian, St...

Sep-24-2023 - Sep-24-2023
St Francis of Assisi Parish , 72 Mansfield Ave., Toronto,
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Abide in Beauty - the Calling of Saint Matthew

ABIDE IN BEAUTY: THE CALLING OF ST. MATTHEW. Visio divina with Les...

Sep-24-2023 - Sep-24-2023
Online - register for details
Virtual Event
Addressing Food Insecurity - 5th Moira Ste. Marie Memorial Lecture Series

The 5th Moira Ste. Marie Memorial Lecture Series will be on...

Sep-25-2023 - Sep-25-2023
Virtual
Webinar screen at home setting
Online Learning Series: Week 4: “How Shall It all End? Ecclesiastes, Yizkor, and Shemini Atzeret” (The Torah of the Celebrations in the Jewish New Year)

Online Learning Series: Week 4: “How Shall It all End? Ecclesiastes...

Sep-26-2023 - Sep-26-2023
Virtual
Hands together
40 Days for Life Fall Campaign

In 2021, the number of abortions in Ontario was 34,988* which...

Sep-27-2023 - Nov-05-2023
Dufferin/Lawerence; 811 Lawrence Ave W Toronto
Pope Indigenous
Talk and Prayers for Truth and Reconciliation with Fr. Cristino Bouvette

St Patrick's Parish (Brampton) invites you to mark National Truth and...

Sep-27-2023 - Sep-27-2023
St. Patrick's Parish, Brampton
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.

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