Şimşek is a Turkish surname meaning "lightning" and may refer to:
- Beykan Şimşek (born 1995), Turkish footballer
- Emre Şimşek (born 1987), Turkish alpine skier
- Hikmet Şimşek (1924–2001), Turkish conductor of Western classical music
- Kenan Şimşek (born 1968), Turkish Olympian sport wrestler and oil wrestler
- Mehmet Şimşek (born 1967), Turkish politician and government minister
- Olgun Şimşek (born 1971), Turkish actor
- Rıdvan Şimşek (born 1991), Turkish footballer
- Sibel Şimşek (born 1984), Turkish female weightlifter
- Yavuz Şimşek (born 1975), Turkish footballer
- Yusuf Şimşek (born 1947), Turkish footballer
- Zeliha Şimşek (born 1981), Turkish women's footballer and coach
See also
- TAI Şimşek, Turkish high-speed target drone