Retail trade is defined in the International Standard Industrial Classification (ISIC) as the re-sale (sale without transformation) of new and used goods to the general public, for personal or household consumption or utilisation.

Retail trade includes the following ISIC Rev. 3 Groups in Division 52 (except repair of personal and household goods).

- non-specialised retail trade in stores;
- retail sale of food, beverages and tobacco in specialised stores;
- other Retail trade of new goods in specialised stores;
- retail sale of second-hand goods in stores;
- retail trade not in stores