| En Name: | Kosteltsevo |
| Ru Name: | Костельцево |
| Coordinates: | 51.8233°N 35.5589°W |
| Map Label Position: | right |
| Federal Subject: | Kursk Oblast |
| Adm District Jur: | Kurchatovsky District |
| Adm Selsoviet Type: | Selsoviet |
| Adm Selsoviet Jur: | Kosteltsevsky |
| Adm Ctr Of1: | Kosteltsevsky Selsoviet |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
| Mun Data As Of: | December 2014 |
| Mun District Jur: | Kurchatovsky Municipal District |
| Mun District Jur Ref: | [1] |
| Rural Settlement Jur: | Kosteltsevsky Selsoviet Rural Settlement |
| Mun Admctr Of1: | Kosteltsevsky Selsoviet Rural Settlement |
| Pop 2010Census: | 177 |
| Established Title: | First mentioned |
| Postal Codes: | 307224 |
| Postal Codes Ref: | [2] |
| Dialing Codes: | 47131 |
| Website: | http://костельцевский-сельсовет.рф/ |
| Date: | September 2021 |
Kosteltsevo (Russian: links=no|Костельцево) is a rural locality and the administrative center of Kosteltsevsky Selsoviet Rural Settlement, Kurchatovsky District, Kursk Oblast, Russia. Population:
The village is located on the Prutishche River in the basin of the Seym, 73 km from the Russia–Ukraine border, 45 km north-west of Kursk, 19.5 km north-west of the district center – the town Kurchatov.[3]
Kosteltsevo is located 32 km from the federal route Crimea Highway, 21.5 km from the road of regional importance (Kursk – Lgov – Rylsk – border with Ukraine), 17 km from the road (Lgov – Konyshyovka), 2 km from the road of intermunicipal significance (38K-017 – Nikolayevka – Shirkovo), on the roads (38N-362 – Kosteltsevo – Zaprutye) and (Kosteltsevo – Mukhino),[4] 18 km from the nearest railway halt 565 km[5] (railway line Navlya – Lgov-Kiyevsky).
The rural locality is situated 51 km from Kursk Vostochny Airport, 149 km from Belgorod International Airport and 254 km from Voronezh Peter the Great Airport.