Heptylparaben (heptyl p-hydroxybenzoate) is a compound with formula C<sub>7</sub>H<sub>15</sub>(C<sub>6</sub>H<sub>4</sub>OHCOO). It is a paraben which is the heptyl ester of p-hydroxybenzoic acid.
Heptylparaben has also been found to be produced in some microorganisms including Microbulbifer.
As a food additive it has E number E209, and is used as a preservative.