  We show that Drinfeld's double group construction for locally compact quantum
groups preserves the Haagerup property. This shows that the Drinfeld doubles of
the quantum groups, $C_{0}(\mathbb{F}_{2})$, $SU_{q}(2)$,
$SU_{q}(1,1)_{\text{ext}}$, quantum $ax+b$, quantum $az+b$, and $E_{q}(2)$ have
the Haagerup property.
