| Sergiy Breus | |
| Native Name: | Сергій Бреус |
| Strokes: | Butterfly |
| Birth Date: | 30 January 1983 |
| Birth Place: | Brovary, Kiev Oblast, Ukrainian SSR, Soviet Union |
Sergiy Breus (born 30 January 1983) is a butterfly swimmer from Ukraine, who won the gold medal in the men's 50 m butterfly at the 2004 European Long Course Championships in Madrid, Spain.