- Online retailers: Many online retailers sell men's Scooby Doo underwear, including Amazon, Walmart, and Target.
- Department stores: Some department stores, such as Macy's and Kohl's, sell men's Scooby Doo underwear.
- Specialty retailers: Some specialty retailers, such as Spencer's Gifts and Hot Topic, sell men's Scooby Doo underwear.
- Boutiques: Some boutiques that sell men's underwear may also carry Scooby Doo underwear.
It is also possible to find men's Scooby Doo underwear at secondhand stores and thrift stores.