St Thomas More Catholic School is a Roman Catholic secondary school with academy status in Blaydon, Tyne and Wear, England, providing teaching to 11- to 19-year-olds. It is a well-regarded and over-subscribed school, performing well both regionally and nationally. In its most recent OFSTED inspection (2023) it was credited with having cultivated a "climate of high ambition" and was rated as "good" in all major areas assessed. The school converted to academy status on 1 February 2012.

The current headteacher is Jillian Turner, who took over after Jonathon Parkinson OBE retired in 2022. Its motto is "regis servus dei prius" which translates as, "I am the King's good servant, but God's first". This is a reference to St Thomas More, and his refusal to recognise Henry VIII as the Supreme Head of the Church following the King's split from the Vatican and Catholicism. There are ties to the two Catholic churches in Blaydon and Winlaton, St Joseph's and St Anne's.^{[citation needed]}

The school is divided into four houses with every pupil placed into one. Each of the houses are named after saints and are as follows:

The houses provide pastoral care for each pupil, as well as being the focus of rivalry during inter-house competitions at the start of the year.

Catering at St Thomas More Catholic School is provided by an in-house company, Bistro@STM. There is a dining hall and separate booth on the yard serving snacks and light meals to the lower school, with an additional café area staffed by the catering department and sixth form students, this café is available for staff, sixth form and guests but not to members of the lower school (Key stage 3 and 4 students).

In October 2011, a new building phase was begun, to house new class rooms which replaced a temporary block. The new building was attached to the main part of the school from the ICT department to the English department, housing science labs and humanities classrooms. The building was completed for the beginning of the 2013/2014 academic year.

During 2015 the school began an extensive construction project that included building a third floor on top of existing maths classrooms and science labs, as well as refurbishing both the interior and exterior of the maths classrooms and science labs and the interior of the textiles technology classrooms. The new floor meant that a larger maths classroom could be built, along with extensive facilities for learning support and psychology as well as a new general classroom and a designated training room. Also a new area was constructed as an addition to the playground that consisted of tables and benches for students to use, replacing area left by the temporary structure.

The school became an academy in August 2012, joining Thorp Academy to become two of the north east's leading schools. A multi-academy trust (The St Thomas More Partnership of Schools) was founded in 2014 with local primary schools, Sacred Heart in Byermoor, and St Matthew's in Prudhoe.