- A district on the northern bank of the river Thames in western London.
- Any of several places (mostly in the US) named after it.
- A type of porcelain once manufactured there.
- A female given name, derived from the London borough.
- (female given name): Chels (diminutive, informal)
- 1969 Joni Mitchell, Chelsea morning ( a song)
- Woke up, it was Chelsea morning
- And the first thing that I heard
- Was a song outside my window