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 Râșnov (15 km from Brașov) in Romania.

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 Râșnov.

[7] The archaeological research at Râșnov was initiated in 1856 by Johann Michael Ackner[8] and continued in 1939 by Macrea Mihail who also recorded the presence of Dacian pottery during the digs at the Rasnov Roman camp[9] The inscription found in 1939:[10][11] Iuliae Mameae augustae matri Domini nostri sanctissimi Imperatoris Caesaris Severi Alexandri augusti et castrorum senatusque cohors Vindelicorum Piae fidelis Cumidavensis Alexandrianae ex quaestura sua dedicante la sdio Dominatio legato augusti III DaciarumAfter Roman conquest, a part of the kingdom of Dacia was included in the Roman Empire.

Septimius Severus (Roman emperor from 193 to 211 AD) pushed Dacia's eastern frontier approximately 10 to 14 kilometers (6.2 to 8.7 miles) east of the Olt River (Limes Transalutanus), constructing a series of 14 camps, over a distance of cca.

According to the director of the Romanian Institute of Archaeology, Alexandru Vulpe, the tablets include only what was known before 1900, for example, the form Comidava from Ptolemy, although now it's known that the correct spelling is Cumidava, as found in 1942 in an inscription.[which?