| Longchuan | |
| Settlement Type: | County |
| Pushpin Map: | China Guangdong |
| Pushpin Label: | Longchuan |
| Pushpin Map Caption: | Location in Guangdong |
| Coordinates: | 24.3333°N 137°W |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Guangdong |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Heyuan |
| Seat Type: | County seat |
| Seat: | Laolong (Chinese: 老隆镇) |
| Area Total Km2: | 3088 |
| Population Total: | 870000 |
| Population As Of: | 2004 |
| Population Density Km2: | auto |
| Timezone: | China Standard |
| Utc Offset: | +8 |
| Postal Code Type: | Postal code |
| Postal Code: | 517300 |
| Area Code: | 0762 |
Longchuan County (postal: Lungchun;, Hakka: Liùngchôn) is a county of northeastern Guangdong province, China, bordering Jiangxi to the north and on the upper reaches of the Dong and Han Rivers. It is under the administration of Heyuan City, and in 2004 had a population of 870,000 living in an area of 3088km2. Bordering county-level divisions are Xingning and Wuhua County to the east, Heping County and Dongyuan County to the south and west, and in Jiangxi, Dingnan County and Xunwu County to the north.
Longchuan administers 24 towns:
Longchuan has a developed highway and railway network. Major roads include the China National Highway 205 (G205) and Guangdong Provincial Highway 120 (S120). The Beijing–Kowloon, Guangzhou–Meizhou–Shantou and Zhangping–Longchuan Railways intersect in Longchuan, making it an important railway hub for the Lingnan region.