There are a number of saints named Thomas so you will need to be more specific.
St. Luke is the patron saint of artists, physicians, surgeons, but he is not specifically associated with any particular country.
Saint Apollonia is traditionally considered the patron saint of land surveyors. She is also the patron saint of dentists and those suffering from toothaches.
Saint Thomas Aquinas is considered the patron saint of Catholic schools. He was a theologian and philosopher known for his scholarly contributions to Catholic education and his emphasis on the importance of reason in faith.
Each country may have more than one patron saint. Listed below are the primary patrons of each country:England - Saint George the martyrScotland - Saint Andrew the Apostle.Ireland - Saint PatrickWales - Saint David of Wales
St. Andrew is the patron saint of Scotland. He is also the patron saint of Greece, Russia, and Romania.
Saint Apollonia is traditionally considered the patron saint of land surveyors. She is also the patron saint of dentists and those suffering from toothaches.
There is no patron saint for cross country. St. Sebastian is the patron saint of all athletes and athletics.
The patron saint of the Basque country is St. Ignatius of Loyola.
St. Nicholas of Myra is a patron saint of Russia and Greece.
St. David of Wales is the patron saint of Wales.
St. Denis of Paris is not the patron saint of any African country.
Perhaps St Thomas, the saint of architects and builders?
St. Thomas the Apostle is the patron saint of construction workers.
St. Nicholas of Myra is the patron saint of Greece and Russia.
St. Albert the Great, while not the patron saint of science is the patron saint of scientists. He was the teacher and mentor of St Thomas Aquinas.
Nicholas of Myra is the patron saint of Russia and Greece.
The patron saints of Catholic schools are St. Thomas Aquinas and St. Ursula.