There are two categories of PP-EU members: Ordinary Members and Observer Members. There is several categories of Observer Members.

Number of members is not limited, but there has to be at least five Ordinary Members. Tle list of members should be deposited at the association's office.

An Ordinary Member has to be an established political party with “Pirate” in its name in a country or state of the European Union OR in a country or state which territory lies at least partly in the geographical Europe without being a member state of the European Union. It must not be a subordinate to any other party in this country or state.