Groups and Organizations

...let your light shine before others, so that they may see your good deeds and glorify your Father in heaven.

Matthew 5:16


Weekly: Fridays 9:00 AM – 5:00 PM

Monthly: 13th of the month 9:00 AM – 6:00 AM (on the 14th)

O Most Holy Trinity, I adore You! My God, my God, I love You in the Most Blessed Sacrament.

Eucharistic Prayer from Fatima

Catholic Charities Auxiliary

Chapter II

The mission of Catholic Charities Auxiliary Chapter II is to assist Catholic Charities of Orange County in their quest to help those in need and to encourage others to do the same. The Auxiliary focuses on fundraising efforts to achieve their mission.


Give yourself and your family the gift of Cursillo! Designed to nurture your relationship with the Lord, these three day retreats are from Thursday evening until Sunday evening and are held in Riverside County.

Divine Mercy Devotion

Members pray the Chaplet each Wednesday after the Perpetual Help Mass, work to promote awareness and devotion to our Lord's Divine Mercy, and pray the Divine Mercy Novena from Good Friday until Divine Mercy Sunday each day at 3:00 p.m.

Faithful Families Ministry

Faithful Families Ministry seeks to foster a multigenerational engagement of the faith by hosting Faithful Family activities. These fun events are wonderful opportunities for parish families to spend time with one another on our campus thus allowing the church to be more than just a place of worship but a community center as well.

Faithful Families Ministry also helps host our twice monthly Family Mass.

For more information, send an email to


The parish Fiesta is our biggest social event of the year. Rides, games, food and music are enjoyed by parishioners and people from the surrounding communities. Don't miss this wonderful Saint Irenaeus tradition!

Filipino Catholic Federation

The Filipino Catholic Federation is committed to preserving and sharing their rich Filipino culture as well as their religious values and traditions. Everyone is welcome to join in one or all of the wide variety of activities supported by the FCF!

Junior Legion of Mary

The Junior Legion of Mary, for ages 8 - 14, focuses on giving glory to God and on preparing to enter the Senior Legion of Mary.

Knights of Columbus

The Knights of Columbus is the world's largest Catholic family fraternal service organization. It provides members and their families with volunteer opportunities in service to the Catholic Church, their communities, families, and young people. We are people of faith and people of action. Some of the many charitable, spiritual, and service activities our local Knights perform include blood drives, H.O.P.E. food bagging, praying the rosary, pancake breakfasts, charity golf tournaments, Special Olympics, support for disabled persons, support for Cub Scouts and Scouts USA, and many social events.

Membership to the Knights is open to Catholic men ages 18 and older.

Interested in joining? Click to receive information.

Lay Apostles Prayer Group

Meets every first Thursday of the month to pray the rosary after the 8:30 a.m. Mass.

Legion of Mary

Members strive to grow in personal holiness, to follow the spirituality of Saint Louis de Montfort, to evangelize others, and to spread the Good News of Jesus. They do "Mary's Work" throughout the parish community; examples include teaching SRE and OCIA, visiting the sick, calling on inactive Catholics, and greeting new parishioners.

New members are always welcome.

Marian Movement of Priests

Prays in the Crying Room every Wednesday after the 8:30 a.m. Mass.


Marriage Enrichment Formation Program

Open to couples married sacramentally in the Catholic Church, the Marriage Enrichment Weekend is a wonderful, spiritual experience. Click to learn more.

Men's Scripture Study

Wednesdays from 6:00 - 7:00 a.m.

Education Building

Rev up your Wednesday mornings with Men's Scripture Study!
This group prays, reflects on the upcoming Sunday's Gospel,

and shares their faith journey.

Mother of Perpetual Help Novena

A novena in honor of Our Mother of Perpetual Help is prayed every Wednesday at 7:00 p.m. followed by Mass. The Mass is celebrated every fourth Wednesday of the month in Tagalog. Please join us!

In addition, all are welcome to pray the rosary every Tuesday in the Crying Room after the 8:30 a.m. Mass.

New Horizons

This support group meets quarterly and is for single, separated, divorced, or widowed individuals ages 50+. In addition, various social activities are planned throughout the year.


Join fellow parishioners, neighbors and friends for an evening of lively music, delicious German style dinner, a wide variety of beverages, and fun games. Held each Fall, Oktoberfest is one of Saint Irenaeus' most entertaining social events!

For tickets for 2023, click on this Vanco Events link

Pew Ministry

Our church is in nearly constant use. Keeping it clean and presentable enhances the liturgical experience for all. Volunteers are always needed. To learn how you can help, please call the Parish Office.

Prayer Ministry

Saint Irenaeus Prayer Ministry wants to pray with you!

To submit a prayer request, click here.

Interested in being part of Prayer Ministry? Please call the Parish Office at 714-826-0760 to learn more.

Pray for one another so that you may be healed. 

James 5:16

Respect Life Ministry

Throughout the year members have the opportunity to participate in a variety of pro-life activities including 40 Days for Life campaigns, praying in front of Planned Parenthood, fundraising, the Lenten Diaper Drive, the October Baby Gift Collection, and attending funerals for abandoned babies at El Toro Memorial Park .

Interested in one of the organizations or groups listed above? Give us a call!