Sergey Hernandez (born 17 June 1995) is a Russian-born Spanish handball player for SC Magdeburg and the Spanish national team.

He won a bronze medal with Spain at the 2021 World Men's Handball Championship and silver at the 2022 European Men's Handball Championship.

At club-level, he was a key player when SL Benfica won the 2021–22 EHF European League, defeating SC Magdeburg in the final.

[2] He was later named MVP in the FINAL4.

[4] At the 2024 European Men's Handball Championship, he was part of the Spanish team's unsuccessful tournament, where they finished 13th.