Grammaticus

Grammaticus is the Latin word for grammarian; see Grammarian (Greco-Roman world). A Grammaticus is a Roman Patrician School

As an agnomen, it may refer to:
 Ammonius Grammaticus (4th century), Greek grammarian
 Diomedes Grammaticus (4th century), Latin grammarian
 Musaeus Grammaticus (6th century), Greek poet
 Virgilius Maro Grammaticus (7th century), early medieval Latin writer
 John VII Grammaticus (9th century), Ecumenical Patriarch of Constantinople
 Alfricus Grammaticus (10th century), Anglo-Saxon abbot and author
 Saxo Grammaticus (circa 1150-1220), Danish medieval historian

As a pseudonym:
 Edward Blaiklock, (1903-1983), British born New Zealand author, wrote as "Grammaticus"

See also
 Damian Grammaticas