"Drugs appear in many shapes and sizes, but every now and then we come across special things," Dongemond Police said in a translated social media post.
"In itself a strange place to keep your garden gnome," the force said. "That's why we decided to test [it] for narcotics".
It is not known which area the gnome was recovered in, but the Dongemond Police covers the municipalities of Oosterhout, Geertruidenberg, Drimmelen and Altena.
Last year, a Scottish man was jailed for more than four years for trying to smuggle over £84,000 worth of MDMA that was hidden in cat food into the country.
A Leeds man was also previously charged over a plot to smuggle 90kg (198lb) of the drug into the UK hidden inside pallets of frozen chicken.