| Native Name: | 支甲 Chi Giáp |
| Conventional Long Name: | Giáp line Ninth dynasty of Hùng kings |
| Common Name: | Ninth dynasty of Hùng kings |
| Era: | Hồng Bàng period |
| Year Start: | 1331 B.C. |
| Year End: | 1252 B.C. |
| Life Span: | 1331 – 1252 B.C. |
| P1: | Đoài line |
| S1: | Ất line |
| Capital: | Phong Châu |
| Government Type: | Monarchy |
| Title Leader: | Hùng king |
| Leader1: | Quân Lang |
| Year Leader1: | 1331 BC– |
The Giáp line (vi|chi Giáp; chữ Hán: 支甲; chi can also be translated to as branch) was the ninth dynasty of Hùng kings of the Hồng Bàng period of Văn Lang (now Viet Nam). Starting 1331 B.C., the line refers to the rule of Quân Lang and his successors, when the seat of government was centered at Phú Thọ.[1]
Quân Lang was born approximately 1375 B.C., and took the regnal name of Hùng Định Vương (雄定王) upon becoming Hùng king.[2] The series of all Hùng kings following Quân Lang took that same regnal name of Hùng Định Vương to rule over Văn Lang until approximately 1252 B.C.
The Đồng Đậu culture strongly influenced the processes involved in making ceramic of this period.[3]