Diocese of Cheyenne Menu

Welcome to the Diocese of Cheyenne website!

The Diocese of Cheyenne encompasses the entire State of Wyoming, to include Yellowstone and Grand Teton National Parks. The rich history of Catholicism in Wyoming began on July 5, 1840, when Father Pierre-Jean DeSmet said the first Catholic Mass near Horse Creek, at the Green River Rendezvous, in present-day Sublette County. Since then, with our Diocese established in 1887, we have grown to 33 parishes and missions. Our state is a land of wide open spaces and sparsely populated towns, but our people are faith-filled and tightly-knit, bound together by a love of God, country, community, and a Western spirit unique to this special place.

Quick links

Mass Times & Readings

For current Mass times, visit the Mass Times website or click on the Parishes page.

Daily Mass Readings from The New American Bible (iTunes podcast)

Daily Video Reflections from USCCB

Quick reads

Find older 'quick read' items on the Parish News page.

Press Release regarding HHS Mandate Read the full press release here...

Youth Synod

Pope Francis has announced a Youth Synod for 2018. All youth 16-29 are invited to fill out the survey. Visit the website and click on the photo of the Pope with youth to begin. There are other documents and information on the site. If the page loads in Italian, look for the EN button at the top right-hand corner to translate. Please share this link and encourage all youth to participate!

Southwest Liturgical Conference

January 16-19, 2018. Are you registered yet? Download your registration form here...


The annual Southwest Liturgical Conference Study Week is a dynamic time of prayer, study, sharing and growth, leading to that “full, conscious and active participation” in the liturgical life of the church as envisioned by the Second Vatican Council. The Diocese of Cheyenne is excited to host the 2018 SWLC Study Week, “Awaken the Voice: Sing as One to the Lord,” as we mark the 10-year anniversary of the US Conference of Catholic Bishops document, Sing to the Lord. ValLimar Jansen, Bishop Mark Seitz, Dr. Steve Janco and Carmen Florez-Mansi will awaken our voices in praise and worship of God through their major addresses; all Clergy are invited to participate with Bishop Seitz in a day-long reflection on the Ars Celebrandi; Hispanic Musicians are invited to play, sing and grow as music ministers with the Hispanic Pastoral Musicians Day; and over 60 individual sessions will look at RCIA; art, architecture and worship spaces; children, youth and catechesis; and provide opportunities and experiences in education and formation for all. Join us in Cheyenne January 16-19, 2018 at the Little America Hotel and Resort.

Diocesan Calendar