Cumidava (also Comidava, Komidava, Ancient Greek: Κομίδαυα) was originally a Dacian settlement, and later a Roman military camp on the site of the modern city of Râşnov (15 km from Braşov) in Romania.

After Roman conquest of Dacia, the Dacian name Comidava had been modified by the Latin writers to Cumidava. (Note: It is very common in the Late Latin inscriptions to express the letter "o" by "u" , e.g. patrunus instead of patronus 'protector', and Latin rumpia instead of Greek ρομφαια (Rhomphaia) 'Thracian claymore / sword'.)

The name Comidava is a compound of dava ‘town’ and “comi”. The scholars' opinions about the meaning of the Dacian word “Comi/Cumi” include:

Another town named Comidava / Cumidava was situated in the Remesiana’s territory

Early references to Cumidava are made by the geographer Ptolemy in his Geographia, in the form Komidava (Ancient Greek: Κομίδαυα).

An inscription on stone dedicated to Julia Avita Mamaea, the mother of the Roman Emperor Alexander Severus (dated 222-235 AD), allows the localization of the Dacian settlement Cumidava in the area of present-day Râşnov.