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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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

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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

  • Auction Timeline - Are you attending the December 8 St. Sebastian School & Parish Auction? Here’s what you need to know: 5:30 – Mass at St. Sebastian Church 6:30 – Auction Check-in at the School Gym. Bid on dozens of silent auction items, play 50/50, and sign up for special events. 8:30 – Dinner is served in the Read More »
  • Christmas & New Year’s Mass Times - Monday, December 24 – Christmas Eve 4pm St. Sebastian (Fr. Larry – Family Mass) 4pm St. Catherine (Fr. Joe) 10:30pm St. Sebastian (Fr. Larry – Choir starts at 10:00)   Tuesday, December 25 – Christmas Day 10:00am St. Catherine (Fr. Larry) 10:30am St. Sebastian (Fr. Acker) (no 8am nor 6pm masses at St. Sebastian today) Read More »
  • Flurry of Sebs Facility Activity - Despite the early snowfall, St. Sebastian maintenance staff, under the guidance of Bryan Kirkpatrick and the Buildings & Grounds Committee, completed or advanced many items over the past month. Most notably, the church bell speakers, which had been out of commission for months, were replaced in time for St. Sebs to participate in the all-archdiocese Read More »
  • New “Bells” in the St. Sebastian Bell Tower - Just in time for Advent and the Christmas season, the St. Sebastian bell tower once again will ring out the hours. But in case you never noticed, there aren’t any bells in the tower, as it’s not structurally designed for the weight. What’s new is a set of speakers and upgraded wiring. St. Sebastian Maintenance Read More »
  • Advent Fun Day for Kids - On Sunday, December 16 from Noon-3 p.m., St. Sebastian high school and middle school Youth Ministry students are providing child care and activities for parish children ages 3 – grade 5 in the School Cafeteria. It’s a great way for parents to enjoy an afternoon out! Suggested donation is $1 per child, plus personal care Read More »

All news & announcements »

Upcoming events

Wed, Dec 12Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am
Fri, Dec 14Weekday Mass @ St. Sebastian Church8:30 am - 9:30 am
Sun, Dec 16Sunday Mass - 8 am @ St. Sebastian Church8:00 am - 9:00 am
Sun, Dec 16Sunday Mass - 10:30am @ St. Sebastian Church10:30 am - 11:30 am
Sun, Dec 16Sunday Mass - 6pm @ St. Sebastian Church6:00 pm - 7:00 pm
Wed, Dec 19Weekday Mass @ St. Sebastian Church8:15 am - 9:15 am