Peter Gilliver (born June 1964 in Yorkshire, England) is a writer and lexicographer who became an Associate Editor of the Oxford English Dictionary in the 1987. He has authored books and articles on J.R.R. Tolkien, who contributed to 'W' section of the O.E.D. in 1919 - 1920. Gilliver saw publication of his own long-time project, The Making of the Oxford English Dictionary, in 2016.
- 1995 - "At the Wordface: J.R.R. Tolkien's work on the Oxford English Dictionary", in Patricia Reynolds' Proceedings of the J.R.R. Tolkien Centenary Conference, 1992
- 2008 - "The Word as Leaf: Perspectives on Tolkien as Lexicographer and Philologist", written with Jeremy Marshall and Edmund Weiner, featured in Stratford Caldecott and Thomas Honneger's Tolkien's The Lord of the Rings – Sources of Inspiration
- 2006 - The Ring of Words: Tolkien and the Oxford English Dictionary, written with Jeremy Marshall and Edmund Weiner