| name | alignment | date dissolved | date founded | city Headquarters | administrative division Headquarters | country Headquarters | continent Headquarters | Country | continent | Website | number of members | short name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Progressive Democrats | Centre-right politics | 20/11/2009 | 21/12/1985 | Dublin | Dublin | Ireland | Europe | Ireland | Europe | Website | PD | |
| Union of Students in Ireland | 1959 | Dublin | Dublin | Ireland | Europe | Ireland | Europe | Website | ||||
| Socialist Party (Ireland) | Far-left politics | 1996 | Dublin | Dublin | Ireland | Europe | Ireland | Europe | Website | SP | ||
| Irish Loyal and Patriotic Union | 1891 | 05/1885 | Dublin | Dublin | Ireland | Europe | Ireland | Europe | Website | |||
| Young Progressive Democrats | 15/09/2009 | 01/09/2002 | Dublin | Dublin | Ireland | Europe | Ireland | Europe | Website |