St . Patrick Catholic Church
- Features Mass times, maps, current bulletin and calendar (both in PDF), staff directory, information on religious education program.
- http://stpatsgretna.org/

Gretna United Methodist Church
- Worship and Sunday school schedule, calendar, location, and phone number.
- http://www.omahadistrictumc.org/gretna/

Gretna Baptist Church
- Highlights its history, beliefs, staff profiles, service times, ministries, calendar of events, sermon archives, photographs, weekly bulletin and driving directions.
- http://www.gretnabaptistchurch.com/

CASDE | Gretna -- Sarpy County
- Surveyed in 1854 and incorporated in 1858. Features its history and photographs.
- http://casde.unl.edu/history/counties/sarpy/gretna/