Sergei (or Sergey) Stepanov may refer to:

• Sergei Aleksandrovich Stepanov (born 1941), Russian mathematician
• Sergei Stepanov (footballer), born 1976
• Sergei Stepanov (politician) from Transnistria
• Sergey Yuryevich Stepanov, footballer born 1995
• Sergey Stepanov (musician) (better known as "Epic Sax Guy"), a saxophonist, member of the SunStroke Project

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