C4H6O
# C4H6O

The molecular formula $C_4H_6O$ may refer to:

* Crotonaldehyde
* Cyclobutanone
* Dihydrofurans
   * 2,3-Dihydrofuran
   * 2,5-Dihydrofuran
* Divinyl ether
* Methacrolein
* Methyl vinyl ketone
