United Federation of Planets
Earth; humans, Vulcans, Andorians, Tellarites, Betazoids, Trill, Bolians, Bajorans, Deltans, et al.
President, Council

Klingon Empire
Qo'noS; Klingons, Kriosians, et al.
Emperor (ceremonial), Chancellor, High Council

Romulan Star Empire
Romulus; Romulans, Remans, et al.
Praetor, Proconsuls, Senate

Ferengi Alliance
Ferenginar; Ferengi
Grand Nagus, Ferengi Commerce Authority (FCA)

Cardassian Union
Cardassia; Cardassians
Detapa Council

Tholian Assembly
Tholia; Tholians
unknown

Breen Confederacy
Breen; Breen
unknown

Dominion
"new Founder homeworld"; Founders, Vorta, Jem'Hadar, Karemma, Teplans, Yaderans, T-Rogorans, et al.
Founders, Vorta