Hydroxyvaleric acid or hydroxypentanoic acid may refer to the following compounds:
- α-Hydroxyvaleric acid (2-hydroxyvaleric acid)
- β-Hydroxyvaleric acid (3-hydroxyvaleric acid)
- γ-Hydroxyvaleric acid (4-hydroxyvaleric acid)
- ω-Hydroxyvaleric acid (5-hydroxyvaleric acid), a ω-hydroxy acid
The carboxylate of the acid is hydroxyvalerate or hydroxypentanoate