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.

Learn more about our parish »

Faith Formation »

Classes Start September 15!

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Parish »

Early Bird Sale through Oct 4!

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School »

2019-20 Registration is Open

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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. Mass – 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.  Communion Service – St. Catherine


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

Daily Reading – review the daily Mass readings.

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.


Stay Connected

Stay connected

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

Latest news

  • Services for Lucy Medley -   Longtime St. Sebastian parishioner, choir member and school mother Lucy Medley passed away on August 29. She will be buried from St. Sebastian on Saturday, September 7. Visitation is from 9:00 – 11am, and the funeral mass is at 11am. Please keep Lucy and her family in your prayers. For more information, see https://www.beckerritter.com/tributes/Lucy-Medley
  • Growing our Young Adult Ministry - If you’re between the ages of 20 and 30 (or know someone that age!), please know that we are continuing last spring initiative to grow our parish’s young adult ministry. We’re inviting people to build a peer community and meet other faith-filled young adults who are connected to the church and each other. The goal Read More »
  • Get to know new development director Marlene Vidal! - Tell us about yourself, personally and professionally. Professionally, my first career and my degree are in Speech and Language Pathology. I’ve been enjoying fundraising/development as my second career for more than 20 years. The experience I bring to this position includes working with Milwaukee’s Girl Scouts, annual giving roles with two arts organizations, and serving Read More »
  • Why Gary Hoffman is a catechist – and why you should consider becoming one - Gary Hoffman has been a St. Sebastian parishioner for more than 20 years. He’s long been involved in the Faith Formation program with his wife Cathy and children (now young adults) Tom and Maggie – most recently as a religion teacher, also known as a catechist. Here are some reflections on why he enjoys his Read More »
  • Safeguarding God’s Children - As part of our commitment to safeguard the lives of our children and youth, the Archdiocese requires every adult who works with children and youth to complete a background check and a special Safeguarding God’s Children workshop before they can begin working with children.  This involves teachers, catechists, coaches, chaperones, and any other positions that Read More »

All news & announcements »

Upcoming events

Sun, Sep 15Sunday Mass - 6pm @ St. Sebastian Church6:00 pm - 7:00 pm
Mon, Sep 16Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Wed, Sep 18Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am
Sun, Sep 22Sunday Mass - 8 am @ St. Sebastian Church8:00 am - 9:00 am
Sun, Sep 22Sunday Mass - 10:30am @ St. Sebastian Church10:30 am - 11:30 am
Sun, Sep 22Sunday Mass - 6pm @ St. Sebastian Church6:00 pm - 7:00 pm
Mon, Sep 23Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Wed, Sep 25Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am
Sun, Sep 29Sunday Mass - 8 am @ St. Sebastian Church8:00 am - 9:00 am

Live with Purpose – Discover Stewardship

An important act of Stewardship is returning your annual pledge form. Your response tells us your level of involvement in the Parish during 2019. Please consider your response prayerfully. For more information and to download a form, click here.