- Persatuan Telekomunikasi Internasional
- Koperasi kredit
- Daftar kode telepon negara di dunia
- Bendera Britania Raya
- Western Union
- Uni Internasional untuk Konservasi Alam
- Persatuan Astronomi Internasional
- Gabungan (teori himpunan)
- Uni Sepak Bola Eropa
- Uni Afrika
- Naisasialiitto Unioni
- European Union
- Recognition of same-sex unions in Italy
- Union of Albanian Women
- Kalmar Union
- SMU
- Albanian Union of Christian Democrats
- Forza Italia (2013)
- LGBTQ rights by country or territory
- LGBTQ rights in San Marino
