| Official Name: | Castelverde |
| Other Name: | Gasr Garabulli |
| Settlement Type: | Town |
| Pushpin Map: | Libya |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Libya |
| Subdivision Type: | Country |
| Subdivision Name: |  Libya |
| Subdivision Type1: | Region |
| Subdivision Name1: | Tripolitania |
| Subdivision Type2: | District |
| Subdivision Name2: | Tripoli |
| Unit Pref: | Imperial |
| Population As Of: | 1995 |
| Population Footnotes: | [1] |
| Population Total: | 34,584 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | UTC + 2 |
| Coordinates: | 32.75°N 13.7167°W |
| Elevation M: | 33 |
| Registration Plate Type: | License Plate Code |
| Registration Plate: | 46 |
Castelverde, also named Gasr Garabulli,[2] [3] is a town in the Tripoli District (Tarabulus), of the Tripolitania region in northwestern Libya.
From 2001 to 2007 it was part of the Tajura wa Al Nawahi AlArba‘ District, which then was merged into Tripoli District.
Castelverde was founded as a colonial settlement in Italian Libya, and is a namesake of the town Castelverde in Lombardy, Italy.
In June 2016, citizens took up arms to defend against a militia from the nearby city of Misrata after a dispute developed between them. During the conflict, a large blast killed 25 people.[4]
It's very popular for its sandy beaches and considered the best rated beach in the country.
The town is situated on the main road between Tripoli and Khoms, Libya, near the Mediterranean Sea coast. The new Libyan railway line passes through Castelverde.