| St. Mary's Catholic High School | |
| Motto: | Latin: Finis Coronat Opus |
| Motto Translation: | The End Crowns the Work |
| Type: | Private |
| Religious Affiliation: | Catholic Church |
| Founder: | Eusebius Daveri |
| Director: | Sr. Jacintha Cutinha |
| Principal: | Paul Asir Joseph |
| Houses: | 4 |
| City: | Umm Hurair Dubai |
| Country: | United Arab Emirates |
| Coordinates: | 25.2403°N 55.3181°W |
| Grades: | JR1-A/L (Year 1- Year 13) |
| Gender: | Co-educational |
| Accreditations: | Edexcel |
| Language: | English |
| Classes Offered: | Edexcel |
| Enrollment: | 2,500+ |
St. Mary's Catholic High School (SMCHS) was established in the year 1968 by Fr. Eusebius Daveri. It is located in the city of Dubai, and is one of the oldest schools in the UAE. Affiliated with the church, the school has a very evident Catholic background.
The land on which St. Mary's Catholic High School, Dubai stands is the kind courtesy of the then dynamic ruler, His Highness Sheikh Rashid bin Saeed Al Maktoum.[1] Under the guidance, determination and foresight of the founding father, Father Eusebius Daveri, St. Mary's Catholic School was born in 1968, in a little classroom, with 30 students and a handful of teachers. On 15 August 1968, Feast of the Assumption of Our Lady, Father Bamba, an Army Chaplain, in the presence of Father Eusebius and the community blessed the foundation stone for the school project.
In 1971, the school was recognised as a Centre for the London University GCE Examinations at Ordinary Levels.