Zilch may refer to:
- A slang term for the number zero (0)
- A group of conserved quantities of the electromagnetic field
- Zilch (band), a Japanese American rock band
- Sonicflood an American Christian band formerly known as Zilch
- Dice 10000 a dice game also known as Zilch
- "Zilch", a song by the Monkees from Headquarters
- Zilch, a forthcoming album by industrial rock band KMFDM.
- Zilch: The Power of Zero in Business, a book by Nancy Lublin.
- A software compiler used by Infocom to create Z-machine games.