PIWI International is an international umbrella organization.

The members are either organized in the countries with their own groups or are direct members of PIWI International.

The following groups currently exist:

PIWI CH - Switzerland
PIWI Valais
PIWI Germany
PIWI Italy (in formation)

- PIWI Alto Adige / South Tyrol
- PIWI Friuli Venezia Giulia
- PIWI Lombardy
- PIWI Trentino
- PIWI Veneto
- PIWI Piemont (in foundation)

PIWI Austria
PIWI Czech Republic (in formation)

Our members are from:

Belgium - Canada - Denmark - Germany - France - Ireland - Italy - Lithuania - Luxembourg - Nepal - Netherlands - Austria - Poland - Sweden - Switzerland - Slovakia - Slovenia - Spain - Czech Republic - Hungary