Welcome to Saint Sebastian Catholic Church

Proclaim Christ and grow believers through the sacramental life of the church as an inclusive and responsive Catholic community.

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Faith Formation »

Download 2018-19 Materials

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Community »

Held at St. Catherine Parish

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School »

2018-19 School Materials Available Now!

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A Life of Liturgy

Gain a deeper understanding of the liturgy through this 33-week program of short videos, as part of a year-long program of the Milwaukee Westside Catholic Parishes to study and engage in the Liturgy of the Church.  Click here.

You’re invited to Mass


  • 8:00 a.m. / 10:30 a.m. / 6:00 p.m. Masses – St. Sebastian
  • 9:00 a.m. Mass – St. Catherine


  • 8:30 a.m. Prayer and Communion Service – St. Sebastian


  • 8:30 a.m. Mass – St. Catherine


  • 8:15 a.m. All School Children’s Mass (when school is in session) – St. Sebastian
  • 8:30 a.m. (when school is not in session) – St. Sebastian


  • 8:30 a.m.  Mass – St. Catherine
  • 8:30 a.m. Prayer and Communion Service – St. Sebastian


  • 8:30 a.m. Mass – St. Sebastian

Daily Reading – review the daily Mass readings.

Stay Connected

Stay connected

Click to view the Sunday Bulletin, register to receive newsletters and follow us on Facebook.

First time here?

St. Sebastian offers a welcoming presence to all! Be sure to check out all the ways to get involved – or ways we can serve you. Questions? Call (414) 453-1061 or email saintsebs@saintsebs.org.


Latest news

  • Teaching Mass - Ever wonder why we do what we do at mass? As an initiative from the Prayer and Worship Committees of Saints Sebastian and Catherine, a unique “Teaching Mass” will be held on Saturday, September 15, 4:30 p.m. at St. Catherine. This mass will be a complete mass celebrating (and “counting for”) the 24th Sunday in Ordinary Read More »
  • Vigil Light Volunteers Needed - Each week our vigil lights need to be re-stocked.  This is a very peaceful job and requires the love of giving light to others.  Volunteers take one month of duty per year.  Re-stocking, weekly, can be done at your own pace and schedule.  We currently have an opening for the months of August and November.  I am looking Read More »
  • New Approach to Stewardship - Based on feedback from many school families and parishioners, a group of volunteers and staff has taken the initiative to improve the way people sign up to volunteer at St. Sebastian events. We have three objectives for our approach: Be simple for volunteers to use Ensure the safety of our children Support event continuity and Read More »
  • Watch the series “Catholicism” free online! - The powerful and ground-breaking religious series CATHOLICISM is 10 years old.  Over the past decade, countless individuals have learned the history, the glory, and the beauty of the Catholic Faith. To celebrate the incredible impact the series has had over the years, Word on Fire is extending a special invitation – a 10th Anniversary FREE Online Screening Read More »
  • The Work of the Building and Grounds Committee - Well-cared for facilities are vital to the welfare of the Parish community. Stay informed by checking out the committee’s web page, which is listed in the right hand column of the “About Our Parish” tab above.

All news & announcements »

Upcoming events

Wed, Aug 22Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am
Fri, Aug 24Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Sun, Aug 26Sunday Mass - 8 am @ St. Sebastian Church8:00 am - 9:00 am
Sun, Aug 26Sunday Mass - 10:30am @ St. Sebastian Church10:30 am - 11:30 am
Sun, Aug 26Sunday Mass - 6pm @ St. Sebastian Church6:00 pm - 7:00 pm
Wed, Aug 29Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am
Fri, Aug 31Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Sun, Sep 2Sunday Mass - 8 am @ St. Sebastian Church8:00 am - 9:00 am