The saint most often named as the patron of engineers is St. Ferdinand III (1198–1252), King of Castile and León, a builder of cathedrals, universities and cities and the patron of Spain’s military engineers. Engineers also honor St. Joseph, the craftsman of Nazareth; St. Barbara, patron of military engineers and of all who work with explosives and towers; St. Thomas the Apostle, patron of builders; and St. Pier Giorgio Frassati, the young Italian saint who was studying mining engineering when he died. Below are their stories and prayers for engineers and engineering students.
A short prayer for engineers, written for this page:
Lord, you made the world with order, beauty and wisdom.
Bless my work as an engineer: help me to design safely and honestly,
to serve the people who will use what I build,
and to respect your creation. Amen.
St. Ferdinand III of Castile
Ferdinand was born near Salamanca in 1198, the son of King Alfonso IX of León and Queen Berengaria of Castile, and a cousin of St. Louis IX of France. He became King of Castile in 1217 and of León in 1230, uniting the two kingdoms. He chose wise counselors, governed justly, and refused to burden his people with heavy taxes, saying that he feared the curse of one poor woman more than a whole army of enemies. He founded bishoprics, hospitals and monasteries, began the great Gothic cathedrals of Burgos and Toledo, and supported the University of Salamanca. A member of the Franciscan Third Order, he died in Seville in 1252, kneeling with a rope around his neck as a penitent, and was canonized in 1671. His feast is May 30. Because he was a great builder and military leader, he is honored as the patron of Spain’s corps of military engineers and of engineers in general.
Other patron saints of engineers
- St. Joseph (March 19 and May 1), the carpenter of Nazareth and patron of all workers and craftsmen. See the St. Joseph prayer.
- St. Barbara (December 4), patron of military engineers, artillery, miners and all who work with explosives. See the St. Barbara prayer.
- St. Thomas the Apostle (July 3), who according to tradition was a builder and architect, patron of builders and architects. See the St. Thomas the Apostle prayer.
- St. Pier Giorgio Frassati (July 4), the joyful young man of Turin who studied mining engineering so he could serve miners, and who died in 1925, days before his final exams. See St. Pier Giorgio Frassati.
- St. Patrick, sometimes honored by Irish engineers, who tradition says taught the Irish to build with stone and mortar. See the St. Patrick prayer.
Prayers for engineers
Written for this page.
An engineer’s prayer
Lord God, Architect of the universe,
through the prayers of St. Ferdinand and St. Joseph,
give me a clear mind and careful hands.
Let what I design be safe, honest and useful,
let me never cut corners where lives are at stake,
and let my work serve the common good and give you glory. Amen.
For engineering students
St. Pier Giorgio, you studied engineering to serve the poor and the workers.
Pray for me in my studies, labs and exams.
Help me to persevere, to work with integrity, and to use my knowledge for others. Amen.
For a project
Lord, bless this project and all who work on it.
Keep everyone safe, guide our decisions, and let what we build last and serve its purpose well. Amen.
Frequently asked questions
Who is the patron saint of engineers?
St. Ferdinand III of Castile is most often named as the patron of engineers. St. Joseph, St. Barbara and St. Thomas the Apostle are also honored by engineers and builders.
Who is the patron saint of engineering students?
Many engineering students take St. Pier Giorgio Frassati, who was studying mining engineering, or St. Thomas Aquinas, patron of students.
Who is the patron saint of software engineers?
No saint has been officially named, but many invoke St. Isidore of Seville and St. Carlo Acutis. See the patron saint of the internet.
More patron saints
- Patron saint of electricians
- Patron saint of mechanics
- Patron saints of professions
- Patron saint of the internet
- St. Joseph prayer
- St. Barbara prayer
- St. Pier Giorgio Frassati
- Unusual patron saints
Texts and sources
- Catholic Encyclopedia (1913), “St. Ferdinand III,” public domain (Wikisource).