Skip to content

Choose a Mass Language at Most Holy Trinity–St. Mary

Separate the Montrose Avenue church from its Johnson Avenue office, and choose an English, Spanish or Polish Mass before visiting.

The BK Brief Desk··3 min read
Conceptual editorial illustration for Most Holy Trinity–St. Mary; not a documentary depiction of the venue.
Illustration: The BK Brief · Original AI-generated editorial illustration

Most Holy Trinity–St. Mary is a Roman Catholic Franciscan parish in Williamsburg, Brooklyn, serving a diverse community with Masses in English, Spanish, and Polish. If you’re considering attending a service, it’s important to distinguish between the church building at 138 Montrose Avenue and the parish office at 153 Johnson Avenue (Door C). Each location serves a different purpose, and planning your visit starts with choosing the right Mass language and confirming the correct address.

The parish welcomes both Catholics and non-Catholics to attend Mass, pray, or listen. The parish reserves Communion for those formally initiated into the Roman Catholic Church; visitors with questions can speak with a friar. Phones should be set to silent, and food or drinks are not permitted inside the church. Children are welcome at all services.

Mass Schedule and Language Options

Most Holy Trinity–St. Mary offers Sunday Masses in three languages: Polish at 8:00 a.m., English at 9:30 a.m. and 12:30 p.m., and Spanish at 11:00 a.m. These times are specific to Sunday, and the parish encourages visitors to verify any schedule updates directly before attending. If you’re planning to attend a Mass in a particular language, check the parish website or call ahead to confirm the current schedule, as changes may occur.

Distinguishing Church and Office Locations

The church itself is located at 138 Montrose Avenue, Brooklyn, NY 11206. Use this address when planning the Sunday worship visit described here. The parish office, which handles administrative matters, is at 153 Johnson Avenue (Door C). Office hours are weekdays from 9:00 a.m. to noon and 1:00 p.m. to 4:00 p.m. Office hours should not be used as a timetable for entering the sanctuary. If you need to speak with parish staff or arrange an appointment, use the office address and hours.

What to Expect During Your Visit

The parish asks all visitors to silence their phones and refrain from bringing coffee or snacks into the church. Children are welcome at all Masses. Non-Catholics are invited to attend, pray, and listen, but should consult a friar if they have questions about participating in communion. If you have accessibility or seating needs, ask the office which entrance and route to use.

Planning Your Arrival

Most Holy Trinity–St. Mary is situated in a residential part of Williamsburg. If you’re using public transit, consider checking MTA schedules for the nearest subway or bus stops. If you require step-free access or have mobility concerns, contact the office before setting your arrival time. The church’s phone number is 718-384-0215.

Faith Visits vs. Architecture

Decide whether you want to attend worship or look at the building before planning your visit. If your interest is primarily architectural, you may need to arrange an appointment rather than arriving during Mass times. Ask the office whether a separate viewing time can be arranged, and whether photography is permitted.

What to Confirm Directly

Before visiting, consider reaching out to confirm:

  • The current Mass schedule and language options for your preferred date
  • Any changes to office hours or church access
  • Accessibility accommodations or parking information
  • Policies for group visits or those interested in architecture

Before You Go

Are you planning to attend a Mass in a specific language, or do you have accessibility needs? Would you like to visit for faith reasons or to see the church’s architecture? Do you need to confirm the schedule or ask about parking? Contact the parish office at 718-384-0215 or check their website for the latest information before your visit. Distinguishing between the church and office locations, and clarifying your purpose for visiting, will help ensure a smooth experience at Most Holy Trinity–St. Mary in Williamsburg.

Last verified October 9, 2026. Practical details can change; check linked official sources before making plans.

Useful? Pass it down the block.Choose newsletter topics