J.R.R. Tolkien’s academic specialty in medieval language studies was philology.
Philology traditionally combines the historical study of languages with the close analysis of texts. Tolkien applied this approach to Old English, Middle English, Old Norse, Gothic, Welsh, Finnish, and other languages. His scholarship examined how words, sounds, and literary traditions changed over time.
This expertise directly influenced his creative work. Tolkien designed languages such as Quenya and Sindarin with histories, sound patterns, and relationships rather than treating them as random collections of invented words. He also built stories and peoples around the languages he created.
Tolkien’s career is sometimes described simply as that of a linguist, but philologist is the more precise historical term for his academic field. He was also a literary scholar and professor, notably at Oxford, where he taught Anglo-Saxon and English language and literature.