| Sergey Hernandez | |
| Birth Date: | 17 June 1995 |
| Birth Place: | Kropotkin, Russia |
| Nationality: | Spanish |
| Height: | 1.98 m[1] |
| Position: | Goalkeeper |
| Currentclub: | SC Magdeburg |
| Clubnumber: | 1 |
| Youthyears1: | 2008–2013 |
| Youthclubs1: | KIF Kolding |
| Years1: | 2013–2018 |
| Clubs1: | BM Helvetia Anaitasuna |
| Years2: | 2018–2020 |
| Clubs2: | CB Ciudad de Logroño |
| Years3: | 2020–2023 |
| Clubs3: | S.L. Benfica |
| Years4: | 2023– |
| Clubs4: | SC Magdeburg |
| Nationalyears1: | 2017- |
| Nationalteam1: | Spain |
| Nationalcaps1: | 54 |
| Nationalgoals1: | 10 |
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.[3] He joined Magdeburg in 2023.[4] At the 2024 European Men's Handball Championship, he was part of the Spanish team's unsuccessful tournament, where they finished 13th.[5]