| Settlement Type: | Town |
| Nickname: | Effa, Waffi, Warri |
| Pushpin Map: | Nigeria |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Nigeria |
| Coordinates: | 5.5167°N 50°W |
| Subdivision Type: | Country |
| Subdivision Name: | Nigeria |
| Subdivision Type1: | State |
| Subdivision Type2: | Local Government |
| Subdivision Name1: | Delta State |
| Subdivision Name2: | Uvwie LGA |
| Leader Title: | Executive Governor |
| Leader Name: | Sheriff Oborevwori |
| Leader Name1: | Mr. Ramson Onoyake |
| Unit Pref: | Imperial |
| Blank Name: | Climate |
| Demographics Type1: | Demographics |
| Demographics1 Title1: | Ethnicities |
| Demographics1 Info1: | Urhobo |
| Demographics1 Title2: | Languages |
| Demographics1 Info2: | Pidgin English, Urhobo |
| Demographics1 Title3: | Religions |
| Demographics1 Info3: | 90% Christianity, 9% Traditional African religions, 1% Islam |
| Official Name: | Effurun |
| Native Name Lang: | Ẹphron |
Effurun is a town and the headquarters of Uvwie Local Government Area in Delta State, Nigeria. It is an Urban center, densely populated with different infrastructural development. it borders its twin city Warri, also serves as an entrance to Warri.
It shares boundaries with Agbarho to the east, Udu to the south, Ughelli South to the south east, Okpe to the north and Warri to the west. Due to her proximity with Warri, rapid population growth and several road network linking both towns and her environs, it formed a conurbation collectively referred to as Warri by people from other parts of the state and Nigeria at large, though each towns in "Warri conurbation" are under different traditional and political authorities.
Effurun is one of the major hubs of economic activities and businesses in Delta State.
The city herself is indigenous to the Uvwie people, a subgroup of the Urhobo.
Its inhabitants are predominantly Christians of different denominations, and some practice a mixture of African traditional religion most notably the Igbe religion common amongst Urhobos like most of Southern Nigeria. The city along with Warri and environs are known nationwide for her unique Pidgin English.