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.

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

Jubilee Year Closing Mass

Join us for the closing Jubilee Mass at St. Gregory the Great on December 28 at 9:30 am.

Ecumenical Worship Service

Ecumenical Worship Service at St. Gregory the Great in Oshawa

SPIRITUS DURHAM YOUNG ADULT EVENT

Calling all Young Adults Ages 19–39! Spiritus Durham invites you to a special evening

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.

Dernières nouvelles

Canadian Catholic Bishops on Bill C-218: No “MAiD” for Mental Illness

The Permanent Council of the Canadian Conference of Catholic Bishops (CCCB) has issued a statement strongly supporting Private...

Cardinal Leo Affirms Concerns of Canadian Bishops re: Bill C-9

5 December 2025 My dear brothers and sisters in Christ, I write to you today to convey my...

SharedLife Campaign 2025 - Thank you Message from Cardinal Leo

Dear Brothers and Sisters in the Lord,I write to you with a grateful heart to thank you...

Interior view of St. Gregory's looking toward the altar

SPIRITUS DURHAM YOUNG ADULT EVENT

Calling all Young Adults Ages 19–39! Spiritus Durham invites you to a special evening, “Angels...

Événements

Young Adult + Chastity

Join us on the evening of February 5 if you want to...

Feb-05-2026 - Feb-05-2026

Merciful Redeemer Parish

Table For Two

A candlelit dinner for engaged and married couples.A night to rekindle...

Feb-06-2026 - Feb-06-2026

139 McCaul Street

Anastasia Poster - 5-8 Ratio (1) (1) (1).jpg

Our Lady Seat of Wisdom College Presents: Anastasia, the Musical. Feb 6-8

Musical Theatre! Join Our Lady Seat of Wisdom College this February 6...

Feb-06-2026 - Feb-08-2026

Barry's Bay, Ontario

Man kneels in church while praying the rosary

Children and Teens Prayer Service

We invite all children for our Children and Teens prayer service at...

Feb-07-2026 - Feb-07-2026

69 William Street Toronto, ON M9N 2G6

Feast of Our Lady of Lourdes 2026

Mass times: 9 a.m., 12 p.m., 3 p.m. &...

Feb-11-2026 - Feb-11-2026

Our Lady of Lourdes Church, 520 Sherbourne St., Toronto

The Call to Religious Freedom: What History Teaches about the Role of Terror in Authoritarian Regimes

AN ONLINE WEBINAR RECOMMENDED BY THE OFFICE FOR ECUMENICAL AND INTERFAITH RELATIONSParticipants...

Feb-11-2026 - Feb-11-2026

Online

Consecration to St Joseph

All are invited to join the Consecration to St. Joseph journey at...

Feb-15-2026 - Mar-19-2026

Merciful Redeemer Parish, Mississauga

Special Prayer Service for Sick & Suffering

We invite you to come and join us at Divine Retreat Centre...

Feb-21-2026 - Feb-21-2026

69 William Street Toronto, ON M9N 2G6

RISE -Young Adults Ministry

We warmly invite young adults aged 20 and above to join &ldquo...

Feb-21-2026 - Feb-21-2026

69 William Street Toronto, ON M9N 2G6

Day Retreat for Men & Women - Out of the Ashes: A Lenten Journey to Resurrection

Day of Reflection for Men/Women. Out of the Ashes: a Lenten...

Feb-23-2026 - Feb-23-2026

Manresa Jesuit Spiritual Renewal Centre

Lenten Retreat

Queen of Apostles Retreat Centre invites all men and women to our...

Feb-28-2026 - Feb-28-2026

1617 Blythe Road, Mississauga, Ontario, L5H 2C3

Embrace Motherhood Workshop - St. Justyn Martyr

This short interactive workshop for moms of young little ones is great...

Feb-28-2026 - Feb-28-2026

St. Justin Martyr Parish

Video Block

You can source and display any video in this block from YouTube or Vimeo. It can be a Mass, reflection or promotional video for an event at your parish or the Archdiocese

Visitez-nous

194 Simcoe Street North
Oshawa, ON
L1G 4S9

Bureau/Adresse postale
194 Simcoe Street North
Oshawa, ON
L1G 4S9

t: 905.723.8141
e: stgregorythegreat@archtoronto.org

Obtenir l'itinéraire

Clergé

Rev. Marijan Sisko
Pastor

Rev. Edward McGovern
Hospital Chaplain

Deacon David MacInnis
Deacon Assistant

Parish Staff

Jacqui Martin
Secretary
stgregorythegreat@archtoronto.org
905-723-8141

Looking down a trail strewn with pine needles in a forest

Pandemic Journal

Listening to the quiet voice of Our Lord . . .

More Info

Building Family Life

The power of God's love in couple and family life.

More Info

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

Veuillez saisir un nom valide

Veuillez entrer une adresse courriel valide

Veuillez saisir un message valide

194 Simcoe Street North, Oshawa, ON L1G 4S9

t: 905.723.8141

stgregorythegreat@archtoronto.org