Sergejs is a masculine Latvian given name. Notable people with the name include:

• Sergejs Boldaveško (born 1970), Latvian ice hockey player
• Sergejs Dolgopolovs (born 1941), Latvian politician
• Sergejs Fjodorovs (born 1956), Latvian politician
• Sergejs Inšakovs (born 1971), Latvian sprinter
• Sergejs Kožans (born 1986), Latvian footballer
• Sergejs Maģers (1912–1989), Latvian footballer
• Sergejs Mirskis (born 1952), Latvian politician
• Sergejs Naumovs (born 1969), Latvian ice hockey player
• Sergejs Pečura (born 1987), Latvian ice hockey player
• Sergejs Potapkins (born 1977), Latvian politician
• Sergejs Semjonovs (born 1959), Latvian footballer and manager
• Sergejs Seņins (born 1972), Latvian ice hockey player
• Sergejs Žoltoks (1972–2004), Latvian ice hockey player

• Sergius (name)