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 »

Two New Ministry Positions Announced

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Stewardship »

Let us Know Your Thoughts!

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Community »

Come Listen to this German Choir & Orchestra

July 22 – 10 am Mass

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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

  • New Online Volunteer Registration - A group of parishioners (volunteers of course!) are examining ways to make it easy for Sebs parish and school event organizers to plan events and encourage volunteers to help out. It starts with having good job descriptions so both planners and volunteers know exactly what’s expected. Then we need an easy way for people to Read More »
  • Parish Finance Council Update - It takes many hands, many minds, many talents, many generous persons to make a parish run and carry out its mission of service. That becomes an even greater task when those available to respond to the call are fewer in number. One of the more difficult tasks is preparing and managing a parish budget, keeping Read More »
  • Buildings & Grounds Update - Here’s the latest from Joann Perleberg, Cluster Finance Director: Cost Savings – Thanks to a mild winter and energy-efficiency improvements, our heating and lighting bill went down. We also had less expenses than budgeted in the areas of regular repairs, and we saw some savings in health insurance. Playground – New game lines will be Read More »
  • Volunteer Coordination Meeting - Tuesday, July 10, 7:00 to 9:00 pm in the Adult Formation Room If you volunteer, manage volunteers, are thinking about volunteering or just have good ideas about volunteering, please come to this meeting! Many Sebs events have used the Volunteer Portal as a way to determine volunteer job duties and track hours, but some find Read More »
  • German Student Concert - On Sunday, July 22, we will celebrate a 10:00 am cluster mass at St. Sebastian. Our special musical guests will be the St. Bonaventura High School choir and orchestra from Dillingen, Bavaria, Germany. If you can’t make it on Sunday, you can see the group perform classical, contemporary, popular and jazz favorites at Pius XI High Read More »

All news & announcements »

Upcoming events

Mon, Jul 9 - Thu, Jul 26Summer Academy Week Two -Four @ St. Sebastian School8:00 am - 12:30 pm
Fri, Jul 20Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Sun, Jul 22Sunday Cluster Mass - 10:00am @ St. Sebastian Church10:00 am - 11:00 am
Sun, Jul 22Sunday Mass - 6pm @ St. Sebastian Church6:00 pm - 7:00 pm
Wed, Jul 25Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am
Fri, Jul 27Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Sun, Jul 29Sunday Mass - 8 am @ St. Sebastian Church8:00 am - 9:00 am
Sun, Jul 29Sunday Mass - 10:30am @ St. Sebastian Church10:30 am - 11:30 am
Sun, Jul 29Sunday Mass - 6pm @ St. Sebastian Church6:00 pm - 7:00 pm
Wed, Aug 1Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am