100 series may refer to:
Japanese train types[edit]
- 100 Series Shinkansen, a Japanese Shinkansen high-speed train type
- Choshi Electric Railway 100 series electric multiple unit
- Keisei AE100 series electric multiple unit
- KiHa 100 series diesel multiple unit
- Meitetsu 100 series electric multiple unit
- Tobu 100 series Spacia electric multiple unit
Other[edit]
- 100-series highways (Nova Scotia), a series of arterial highways in the Canadian province of Nova Scotia
- Lenovo IdeaPad 100, a discontinued brand of notebook computers
- GeForce 100 series graphics proccesing units produced by Nvidia