| Type: | commune |
| County: | Constanța |
| Population Total: | auto |
| Official Name: | Gârliciu |
| Leader Name: | Anica Tufă[1] |
| Leader Term: | 2020 - 2024 |
| Leader Party: | ADER |
| Area Total Km2: | 61.91 |
| Coordinates: | 44.7667°N 33°W |
Gârliciu is a commune in Constanța County, Northern Dobruja, Romania, containing the village with the same name.
4.5 km south of Gârliciu is the site of the Roman fort Cius[2] located in the Roman province of Moesia in the 1st century AD and part of the defensive frontier system of the Limes Moesiae along the Danube.
It was built on a hill at the end of a narrow peninsula parallel to the Danube, today on the north-east side of Hisarlâk lake, although the river is today more than 4.5 km north-westwards. [3]
There were two stone forts with ditch and ramparts, one within the other of approximately 85 x 60 m and 120 x 120 m respectively.
The garrison of the early fort was cohors I Lusitanorum Cyrenaica, until its movement upstream to Nigrinianis (later Candidiana).
Reconstruction, ordered by emperor Valens, was done by milites primani headed by a tribunus Marcianus and a praepositus Ursicinus, supervised by provincial governor Flavius Stercorius, as described in an oration by Themistios before the emperor at Constantinople in early 370.[4]
Cius is included in the Itinerarium Antonini,[5] at 10000 feet from Carsium (Hârșova) and 14000 feet from Beroe (castrum) (Piatra Frecăței).
At the 2011 census, Gârliciu had 1,511 Romanians. No other ethnicities were recorded.[6]