There are various kinds of leaders in Tibia, from royalty and political leaders to organisation heads and military leaders. Some rule entire continents and some rule just a few people.
Rulers
Rulers are the ones heading states, and usually have ancestors who were also royalty. Everyone in their entire kingdom is their subject, but this does not mean that all of them also agree with the way they are ruled. Most rulers have the ability to promote worthy adventurers.
Kings
Tibianus I, former ruler of the Thaian Kingdom.
Yorik I, former ruler of the Thaian Kingdom.
Yorik II, former ruler of the Thaian Kingdom.
Tibianus II, former ruler of the Thaian Kingdom.
Xenom, former ruler of the Thaian Kingdom.
Tibianus III, current ruler of the Thaian Kingdom.
Markwin, current ruler of the Minotaurs of Mintwallin.
The Orc King, current ruler of the Orcs of Ulderek's Rock.
An Old Dragonlord, current ruler of Draconia.
Navigator, current ruler of the Deeplings.
Kullu, current ruler of Cake Keep Isle.
Gabel, former ruler of all Djinn.
Queens
Elorana, former ruler of Carlin.
Eloise, current ruler of Carlin.
The Queen Of The Banshees, current ruler of the Ghostlands.
Emperors
Gramlok Silverbeard, former ruler of Kazordoon.
Kruzak Dustbeard, current ruler of Kazordoon and Farmine.
Azerus Vilus, current ruler of Yalahar.
Rehal, current ruler of Beregar.
Awareness of the Emperor, current ruler of Zao.
Caliphs
Kazzan Ibn Gadral, current ruler of Darashia.
Pharaohs
Harrah I, former ruler of Ankrahmun.
Esuph I, former ruler of Ankrahmun.
Esuph II, former ruler of Ankrahmun.
Karkhaneses I, former ruler of Ankrahmun.
Karkhaneses II, former ruler of Ankrahmun.
Harrah II, former ruler of Ankrahmun.
Esuph III, former ruler of Ankrahmun.
Rahmen Tah, former ruler of Ankrahmun.
Esuph IV, former ruler of Ankrahmun.
Ashmunrah, former ruler of Ankrahmun.
Arkhothep, current ruler of Ankrahmun.
Jarls
Sven the Elder, former ruler of Svargrond.
Sven the Younger, current ruler of Svargrond.
Representatives
Representatives, while not themselves heads of state, represent their rulers in the outposts or colonies where they are stationed. However, of all representatives only Grand Viziers can bestow honours such as promotions. This means that most of the time, you will have to visit the rulers of Tibia's main cities directly if you want to be promoted.
Daniel Steelsoul, Thais' current Governor of the islands of Edron and Cormaya.
Dermot, Thais' current Magistrate of Fibula.
Percy Silverhand, Thais' current Governor of Liberty Bay.
Roderick, Thais' current Ambassador to Ab'Dendriel.
Theodore Loveless, current Spokesman of the Venorean trading companies in Liberty Bay.
Baltim, current Spokesman of the Venorean trading companies at Tyrsung.
Barazbaz, currently representing the citizens of Rathleton as Magistrate.
Ezebeth, currently representing the citizens of Rathleton as Magistrate.
Jondrin, currently representing the citizens of Rathleton as Magistrate.
Marvin, currently representing the citizens of Rathleton as Magistrate.
Sholley, currently representing the citizens of Rathleton as Magistrate.
Ongulf, current Representative of Emperor Kruzak in Farmine.
Ishebad, current Grand Vizier of Ankrahmun, representing Arkhothep.
King Chong I, former Dragon King of Razachai, representing Awareness Of The Emperor.
King Chong II, former Dragon King of Razachai, representing Awareness Of The Emperor.
King Chong III, former Dragon King of Razachai, representing Awareness Of The Emperor.
Ztiss, current Magistrate of Zao (except for Razachai), representing Awareness of the Emperor.
Izsh, current Magistrate of Razachai, representing Awareness of the Emperor.
Military Leaders
Military Leaders support their heads of state by leading an armed force, allowing them to swiftly react to and defend the kingdom againts unwelcome intruders whenever necessary.
Generals
Thais, former general of the Tradespot troops.
Tibianus I, former general of the Tradespot troops.
Benjamin, former general of the Thais Army.
Harkath Bloodblade, current general of the Thais Army.
Bunny Bonecrusher, current general of the Carlin Army.
Morguthis, former general of Ankrahmun.
Malor, former general of all Djinn under Gabel.
Baa'Leal, current general of the Efreet.
Fa'Hradin, current general of the Marid.
Palkar, former general of the Minotaurs of Mintwallin under Markwin and current general of the Minotaurs of the Ancient Temple.
General Murius, current general of Minotaurs under Markwin.
Commanders
Black Knight, former commander of the Thais Army.
Gnomeral, current commander at Gnomebase Alpha.
Gnommander, current commander at the Spike.
Commander Stone, current commander of the "Bigfoots", which aid the Gnomes.
Sandomo, current commander of the Inquisition's Roshamuul mission.
Admiral Wyrmslicer, current commander of the Liberty Bay military.
Navigator, current commander of the Deeplings.
Sheriffs
Wyat, current sheriff of Thais.
Shauna, current sheriff of Carlin.
Elathriel, current sheriff of Ab'Dendriel.
Captains of Guard
Tulf, current captain of the Kazordoon Guard.
Sylvester, current captain of the Venore Guard.
Falk, current captain of the Edron Guard.
Clark, current captain of the Port Hope Guard.
Terrence, current captain of the Rathleton Guard.
Admirals
Admiral Wyrmslicer, current Admiral of the Thaian Fleet.
Organisation Leaders
Organisation Leaders lead organisations, and are often looking for additional members to join their cause.
Taciror, former and last highlord of the Nightmare Knights.
The Dream Master, current leader of the Nightmare Knights.
Goshnar, former leader of the Brotherhood of Bones.
The Bone Master, current leader of the Brotherhood of Bones.
Henricus, current leader of the Inquisition.
Uncle, current headman of the AVIN.
Chester Kahs, current captain of the TBI.
Emma, current head of the CGB.
Dorian, current leader of the Thieves Guild.
Mr. West, current leader of the Trade Quarter.
Grizzly Adams, current leader of the Paw and Fur Society.
Rotem Valos, current leader of the Adventurers' Guild.
Clique Leaders
Clique Leaders can lead either tribes, clans or castes. Usually, such a group consists of only a few members, most of which automatically belonged to it upon birth. Only rarely will you find members in here who were initially outside of the group.
Tribe Leaders
Muhad ib Lisan al-Gaib, current leader of the Nomad Tribe.
Hairycles, current leader of the Apes.
Lazaran, current leader of the Cavemen Tribe.
Curos, current leader of the Zaoan Orc Tribes.
Gabel, current leader of the Marid.
Malor, current leader of the Efreet.
Captain Kid, former leader of the Pirates in The Cave.
Klaus, current leader of the Nargor Pirates.
Yakchal, current leader of the Barbarians.
Old Rock Boy, current leader of the Rockboys.
Clan Leaders
Nina, current leader of the Grey Shadow Clan.
Rottin Wood, current leader of the Married Men.
Ashari, current leader of the Repenters.
Chartan, current leader of the Zaoan Resistance.
The Beggar King, current king of the Rathleton beggars.
Raymond Striker, current leader of the rebel settlement of Sabrehaven.
Freezhild, current leader of the Krimhorn Barbarians.
Caste Leaders
Eroth, current leader of the Cenath caste.
Faluae, current leader of the Deraisim caste.
Elathriel, current leader of the Kuridai caste.
Kawill, current leader of the Geomancers.
Pydar, current leader of the Pyromancers.
Talphion, current leader of the Technomancers.
Overseers
Overseers are responsible for supervising and managing business-related operations, and keeping the workers under them in check.
Expedition Leaders
Ongulf, current leader of the Farmine expedition.
Rehon, current leader of the Beregar expedition.
Foremen
Budrik, current foreman of the Splintered Stone Mine.
Dronk, current foreman of the Sunken Mines.
Melfar, current foreman of the Diggers Depths Mine.
Shirith, current foreman of the Shadow Caves Mine.
Xorlosh, current foreman of the Beregar Mines.
Uso, current foreman of the Port Hope Mines.
Norman The Foreman, current foreman of the Venore Production Sites.
Hexel, current foreman of the Glooth Factory.
Supervisors
Halvar, current supervisor of the Svargrond Arena.
Chrak, current supervisor of the Chazorai Arena.
Victor, current supervisor of the Duelling Arena in Thais.
Brom, current supervisor of the Duelling Arena in Kazordoon.
Shadowpunch, current supervisor of the Duelling Arena in Edron.
Brutus, current supervisor of the Duelling Arena in Ankrahmun.
Roughington, current supervisor of the Duelling Arena in Rathleton.
Gnomaticus, current combat training supervisor of the Gnomes.
Gnomelvis, current musical supervisor of the Gnomes.
Gnomenezer, current golem supervisor of the Gnomes.
Shopmasters
Abran Ironeye, current master of the Ironhouse.
Allen Richardson, current master of the Plank and Treasurechest Market.
Oscar Savage, current master of the Dress for Success Warehouse.
Leeland Slim, current master of the Useful Things Warehouse.
Talesia De'Mir, current mistress of the Crunor's Finest Warehouse.
Vladruc Urghain, current master of the The Magic Bazar.
Maria Corona, current mistress of the Hard Rock Tavern.
A Grumpy Cyclops, current master of the Weapon and Armor shop in Yalahar.
Headmasters
Seymour, current headmaster of the Rookgaard Academy.
Arkulius, current headmaster of the Noodles Academy of Modern Magic.