Siniša (Serbian Cyrillic: Синиша) is a South Slavic masculine given name of medieval Serbian origin. It may refer to:

• Simeon Uroš "Siniša" (1326–1371), Serbian ruler of Epirus and Thessaly
• Siniša Branković (born 1979), Serbian soccer player
• Siniša Dobrasinović (born 1977), Montenegrin-born Cypriot football player
• Sinișa Dragin (born 1960), Serbian-Romanian film director
• Siniša Đurić (born 1976), Bosnian Serb football manager and former player
• Siniša Ergotić (born 1968), Croatian long jumper
• Siniša Gagula (born 1984), Bosnian football player
• Siniša Glavašević (1960–1991), Croatian reporter who was killed in the Battle of Vukovar
• Siniša Gogić (born 1963), Serbian and Cypriot football striker
• Siniša Janković (born 1978), Serbian football forward
• Siniša Kelečević (born 1970), Croatian basketball player
• Siniša Kovačević (born 1954), Serbian author and playwright, professor of the Belgrade Academy of Arts
• Siniša Linić (born 1982), Croatian football midfielder
• Sinisa Malesevic MRIA (born 1969), political/historical sociologist at the University College, Dublin
• Siniša Mihajlović (born 1969), Serbian former football player turned manager
• Siniša Mulina (born 1973), Bosnia and Herzegovina international footballer
• Siniša Oreščanin (born 1972), Croatian football manager
• Siniša Radanović (born 1979), Serbian central defender
• Siniša Saničanin (born 1995), Bosnian footballer
• Siniša Skelin (born 1974), Croatian rower who has won two Olympic medals
• Siniša Školneković (born 1968), former Croatian water polo player
• Siniša Stevanović (born 1989), Serbian footballer
• Siniša Ubiparipović (born 1983), Serbian-American footballer
• Siniša Vuco (born 1971), Croatian singer and songwriter

• All pages with titles containing Sinisa
• John Sinisa, Tongan rugby league player
• Siniša Broćeta Serbian humanists in Milan (Italy)