Sergei Udaltsov
- Sarlavha: Sergei Udaltsov
- Ommaboplik: 0.2596
- Bilinadi: Acting
- Tug'ilgan kun: 1977-02-16
- Tug'ilgan joyi: Moscow, USSR (now Russia)
- Bosh sahifa: https://www.leftfront.org
- Shuningdek, nomi bilan tanilgan: Сергей Удальцов, Sergey Udaltsov
