Guild

Every class in Final Fantasy XIV is part of a Guild. These guilds, lead by a Guildmaster, serve to teach adventurers the fundamentals of their class and provide them with basic equipment. Each starting major city is a host to several different guilds. A player can join all other guilds once they reach level 10 as a Disciples of War or Disciples of Magic.

A new player will start in the city where his or her chosen class' guild resides.

Limsa Lominsa

Limsa Lominsa has the following Guilds:

Marauders' Guild, also known as the Coral Tower, is located in Limsa Lominsa Upper Decks (X:11, Y:6).
Arcanists' Guild, also known as Mealvaan's Gate, is located in Limsa Lominsa Lower Decks (X:4, Y:11).
Rogues' Guild, masquerading as the convent The Dutiful Sisters of the Edelweiss, is located in Limsa Lominsa Lower Decks (X:8, Y:16). (This class, added with Patch 2.4, cannot be selected at start.)
Blacksmiths' Guild, also known as Naldiq & Vymelli's, is located in Limsa Lominsa Upper Decks (X:10, Y:15).
Armorers' Guild, also known as Naldiq & Vymelli's, is located in Limsa Lominsa Upper Decks (X:10, Y:15).
Culinarians' Guild, also known as The Bismarck, is located in Limsa Lominsa Upper Decks (X:9, Y:8).
Fishermen's Guild, also known as Fisherman's Bottom, is located in Limsa Lominsa Lower Decks (X:7, Y:14).

Ul'dah has the following Guilds:

Gladiators' Guild, located within the Coliseum, is located in Ul'dah - Steps of Thal (X:9, Y:11).
Pugilists' Guild, located within the Platinum Mirage casino, is located in Ul'dah - Steps of Nald (X:9, Y:10).
Thaumaturges' Guild, also known as the Arrzaneth Ossuary, is located in Ul'dah - Steps of Nald (X:6, Y:12).
Goldsmiths' Guild, separate from but affiliated with Eshtaime's Aesthetics, is located in Ul'dah - Steps of Thal (X:10, Y:13).
Weavers' Guild, separate from but affiliated with Sunsilk Tapestries, is located in Ul'dah - Steps of Thal (X:14, Y:13).
Alchemists' Guild, separate from but affiliated with Frondale's Phrontistery, is located on the Hustings Strip of Ul'dah - Steps of Thal (X:8, Y:13).
Miners' Guild, also home to the offices of Amajina & Sons Mineral Concern, is located in Ul'dah - Steps of Thal (X:11, Y:14).

Gridania has the following Guilds:

Lancers' Guild, also known as the Wailing Barracks, is located in Old Gridania (X:14, Y:5).
Archers' Guild, also known as the Quiver's Hold, is located in New Gridania (X:15, Y:12).
Conjurers' Guild, also known as Stillglade Fane, is located in Old Gridania (X:6, Y:10).
Carpenters' Guild, also known as The Oak Atrium, is located in New Gridania (X:10, Y:12).
Leatherworkers' Guild, also known as Fen-Yll Fineries, is located in Old Gridania (X:12, Y:7).
Botanists' Guild, also known as Greatloam Growery, is located in Old Gridania (X:6, Y:8).

Note: None of these jobs can be selected at start.

Ishgard has the following Guilds:

Dark Knight advancement is through an NPC in The Forgotten Knight tavern, located in The Pillars (X:13, Y:11).
Machinists' Guild, named Skysteel Manufactory, is located in Foundation (X:8, Y:10).
Astrologians' Guild, named Athenaeum Astrologicum, is located in The Pillars (X:15, Y:10).

Due to the adverse player reaction to the Main Scenario Quests requirements for the Ishgard jobs, no further jobs received a new guild located in their expansion's areas. All Stormblood and later jobs are unlocked in A Realm Reborn zones and have itinerant pseudo-guildmasters.