Arms of the University of Oxford, including the motto.

Dominus Illuminatio Mea is the motto of the University of Oxford and the opening words of Psalm 27, meaning The Lord is my light. A motto (from the Italian word motto, meaning witticism sentence is a phrase meant to formally describe the general motivation or intention of a social group The University of Oxford (informally "Oxford University" or simply "Oxford" located in the city of Oxford, Oxfordshire, England is the Psalms ( Hebrew: Tehilim, תהילים, or "praises" is a book of the Hebrew Bible (the Christian Old Testament) included It has been in use at least since the second half of the 16th century, and it appears on the University's arms. The Arms of the University of Oxford show an open book with the inscription ' Dominus illuminatio mea ' surrounded by three golden crowns

Dominus Illuminatio Mea is also one of the two mottos of Robert College of Istanbul, and it appears on the arms of Robert College Alumni Association since 1957 next to Veritas. Robert College of Istanbul ( Turkish: Istanbul Amerikan Robert Lisesi) is one of the most selective independent private high schools in Turkey. Istanbul (historically Byzantium and later Constantinople; see the other Names of Istanbul) is the largest city of Turkey

Additionally, it is the motto of Cair Paravel-Latin School, a private college-preparatory school in Topeka, Kansas. Cair Paravel-Latin School (commonly Cair Paravel or CPLS) is a coeducational non-profit interdenominational Christian Private school in Furthermore, it is the motto of Hallfield Independent School in Birmingham, UK.