Join Our Parish

Welcome to St. Sebastian!

We have an active and prayerful parish with many opportunities for you to worship with us and to share our life in Christ. As a family of believers dedicated to carrying out the mission of Jesus Christ, we welcome you.

Located in the diverse Washington Heights neighborhood near Wauwatosa, for more than 100 years we have lived out our call to discipleship by offering sacramental life, service, teaching and healing to all God’s people.

Registration Form

There are 2 ways to register:

After each Mass on Welcome Sunday, the first Sunday of every month.

Stop in the Multi-purpose Room (at the north end of the Gathering Space) to meet with a parish representative and ask any questions you may have to help you learn more about our community.

If your family is ready to register, fill out the registration form online above and you will be contacted soon after. 

All new families and single adults 18 years of age or older are invited to join us. We ask all of our members to live their faith by:

  • Participating in Mass regularly
  • Sharing talents and knowledge
  • Supporting the parish financially

Dive Deeper

Our Time & Talent Survey can help you identify your unique gifts – gifts you can use to strengthen your relationship with God and at the same time, influence and help the parish community. After reviewing the Ministry Guide, please prayerfully consider how you might participate fully as a member of the St. Sebastian Community and fill out the Time and Talent Survey.  There are many ministries to consider, so please scroll down when completing the survey to find the category that will fit your interest.  If you have any questions about the survey, contact Maria Watson, Development Director, at or call 414-453-1061 Ext.127.

Learn More About Us

Directory and Ministry Guide