Sergey Ignatyev
Sergey Ignatyev may refer to:
- Sergey Ignatiev (politician), a Soviet politician
- Sergey Ignatyev (economist), Russian economist, banker and official
- Sergey Ignatyev (artist), Uzbek artist and human rights defender
- Sergei Ignatyev (footballer), Russian footballer
- Sergei Ignatyev (boxer), Russian boxer who participated in the 2008 Boxing World Cup