400 series may refer to:
- 400-series highways (Ontario), a network of freeways in Canada
- 400 Series Shinkansen, a Japanese high-speed train
- Rover 400 Series, a small British family car
- GE-400 series, computers produced by General Electric in the 1960s
- Kodak DCS 400 series, a series of digital SLR cameras produced by Eastman Kodak
Famous quotes containing the word series:
“I look on trade and every mechanical craft as education also. But let me discriminate what is precious herein. There is in each of these works an act of invention, an intellectual step, or short series of steps taken; that act or step is the spiritual act; all the rest is mere repetition of the same a thousand times.”
—Ralph Waldo Emerson (1803–1882)