The Ruling Conclave of the Tholian Assembly was the collection of Tholians who jointly served as the head of state and head of government of the Tholian Assembly. (VAN novel: Harbinger, ST - Destiny novel: Mere Mortals)

Typically, this body was responsible for withholding alarming knowledge from the lower echelons of the Lattice in the interest of preventing any forms of reckless action from being conducted by individuals that sought to harm the rest of the Assembly. (VAN novel: Harbinger)

Heads of Government
Interstellar States	Federation President • Klingon Chancellor • Romulan Praetor • Imperial Romulan State Empress • Cardassian Castellan • Cardassian Chief Executor • Ferengi Grand Nagus • Tzenkethi Autarch • Gorn Imperator • Breen Domo • Orion Chancellor • Tholian Ruling Conclave • Thallonian Prime Minister • Tezwan Prime Minister • Enoch President • Kropasar High Cyning • Caeliar Tanwa-Seynorral • Talarian Commander-in-Chief • Knshaya Pontifex
Federation Member States	United Earth Prime Minister • Vulcan Administrator • Vulcan First Minister • Andorian Chancellor • Alpha Centauri Governor • Bajoran First Minister • Trill President • Cestus Governor • Betazoid Governor • Denevan President • Pacifican Governor • Peliar Zel Governor • Zaldan Leader
Federation Colonies	Tarsus Governor • Alpha V Governor • Mantilles Governor • Caldos Governor
UFP Member State Polities	United States President (United Earth) • Indian Prime Minister (United Earth) • Governor of Prophet's Landing (Republic of Bajor)
Mirror Universe	Terran Emperor • Terran Consul • Klingon Regent