| Ilsanseo-gu | |
| Native Name Lang: | ko |
| Settlement Type: | Non-autonomous District |
| Translit Lang1: | Korean |
| Translit Lang1 Type1: | Hanja |
| Translit Lang1 Info1: | 一山西區 |
| Translit Lang1 Info2: | Ilsanseo-gu |
| Translit Lang1 Info3: | Ilsansŏ-gu |
| Mapsize: | Map of Gyeonggi highlighting Ilsanseo-gu. |
| Subdivision Type: | Country |
| Subdivision Name: | South Korea |
| Subdivision Type1: | Region |
| Subdivision Name1: | Sudogwon (Gijeon) |
| Subdivision Type2: | Province |
| Subdivision Name2: | Gyeonggi |
| Subdivision Type3: | City |
| Subdivision Name3: | Goyang |
| Parts Type: | Administrative divisions |
| Parts: | 9 dong |
| Population Blank1 Title: | Dialect |
| Population Blank1: | Seoul |
Ilsanseo-gu (literally “Western Ilsan district”) is a district in Goyang, Gyeonggi-do, South Korea. Ilsan-gu was divided into Ilsandong-gu and Ilsanseo-gu on May 16, 2005.
Ilsanseo-gu is divided into 9 dong (동, "neighborhoods"):
Ilsanseo-gu has 46 schools including: 22 elementary schools, 12 middle schools, 9 high schools, and 2 special schools.[1]
Hugok (후곡) is notable for their hagwons (학원, "cram school"), and many hagwons are present in the region.