Complete List of PC Classes

One thing I should point out is my opinion on NPC classes. Sometimes, I see a class presented in Dragon magazine that is quite obviously better suited to use with an NPC. This is simply because the character type is ill suited to adventuring life, combat, etc. I do not hold to the idea that a player should be barred from using a class, however ill suited I might think it is, just because TSR said it was for NPCs only. If I ban a class from PC use, like the Samurai from Dragon Magazine, they are not going to meet any NPC Samurai's either. Goose and gander, fair is fair. I include the NPC classes in this list with that in mind.


"Core" B/X, BECMI rulebooks:

Basic:
Cleric
Fighter
Magic User
Thief
Dwarf
Elf
Halfling

Companion (Also in the RC):
Druid (high level Cleric subclass)
Knight (high level Fighter subclass)
Paladin (high level Fighter subclass)
Avenger (high level Fighter subclass)
Magist (high level Magic User "subclass", more of a role than a class, no real unique abilities)
Magus (high level Magic User "subclass", more of a role than a class, no real unique abilities)
Guildmaster (high level Thief "subclass", more of a role than a class, no real unique abilities)
Rogue (high level Thief "subclass", more of a role than a class, no real unique abilities)

Master (Also in the RC):
Mystic (sort of a cloistered monk class)
Guidelines for non-human (and non-elf) spellcasters, handy if you use one of the spellcasting add ons for shaman types found in the books below.

Immortals (See also the Wrath of the Immortals accessory):
This set obviously introduces a bunch of new options for ultra-high level PCs, but these are beyond the scope of basic class options.

"Splatbooks" including Mystara and Hollow World Supplements:

Gazetteer 2, The Emireates of Ylaruam
Dervish (a desert themed druid variant)

Gazetteer 3, The Principalities of Glantri
Magic Crafts: (variant "specialty" class options for magic users)
Alchemist
Dracologist
Elementalist
Illusionist
Necromancer
Cryptomancer
Witch
Radiant

Gazetteer 5, The Elves of Alfheim
Special rules for "splitting" the elf class to focus on either fighting or magic use

Gazetteer 6, The Dwarves of Rockhome
Dwarf Cleric

Gazetteer 8, The Five Shires
Halfling Master (Spellcasting class for Halflings)

Gazetteer 9, The Minrothad Guilds
Merchant Prince (seafaring spellcaster with a pirate flavor)

Gazetteer 10, The Orcs of Thar
Kobold
Goblin
Orc
Hobgoblin
Gnoll
Bugbear
Ogre
Troll
The above classes are all basically thefighter type class for the each of those various humanoid races.
Shaman (this is an add on to the race based classes above, giving them minor cleric spellcasting)
Wicca (this is an add on to the race based classes above, giving them minor magic user spellcasting)

Gazetteer 11, The Republic of Darokin
Merchant (a travelling trader with minor spellcasting)

Gazetteer 12, The Golden Khan of Ethengar
Horse Warrior (a fighter subclass for the mounted warrior)
Bratak (a thief subclass with a penchant for spying, diplomacy and riding)
Hakomon (a magic user variant)
Shaman (a cleric variant for the less civilized)

Gazetteer 13, The Shadow Elves
Shadow Elf (a minor variation on standard elves)

Gazetteer 14, The Atruaghin Clans
Shamani (another totemic cleric variant)

Dawn of the Emperors Gazetteer (Boxed Set)
Forester (a human version of the magic using fighter elf class)
Rake (a thief variant geared toward burglary and adventuring instead of backstabbing and muggings)

Creature Crucible 1 - Tall Tales of the Wee Folk
Centaur
Dryad
Faun
Hsiao
Treant
Wood Imp
Brownie
Leprechaun
Pixie
Sprite
Pooka
Sidhe
Woodrake
These are, with a couple exceptions, just the typical "fighter" versions of these races, but as with the Orcs of Thar, rules are included for adding on to the class to grant some spellcasting abilities as well.

Creature Crucible 2 - Top Ballista
Faenare
Gnome
Skygnome
Gremlin
Harpy
Nagpa
Pegataur
Sphinx
Tabi
These are, with a couple exceptions, just the typical "fighter" versions of these races, but as with the Orcs of Thar, rules are included for adding on to the class to grant some spellcasting abilities as well.

Creature Crucible 3 - The Sea Folk
Aquatic Elf
Kna
Kopru
Merrow
Nixie
Sea Giant
Shark Kin
Triton

Creature Crucible 4 - Night Howlers
Werewolf
Werebat
Werebear
Wereboar
Werefox
Wereseal
Wereshark
Weretiger
Devil Swine
Wererat

Hollow World Campaign Setting
Warrior Elf (an elf variant with no magical ability)
Beastman
Bruteman
Hutaakan
Krugel Orc
Kubitt (actually just a variant human "race", they use the normal human classes but have racial modifiers and abilities)
Malpheggi Lizardman
Once again, rules are included for adding on to the class to grant some spellcasting abilities as well.

Hollow World, Kingdom of Nithia Sourcebook
Archer
Charioteer
Heavyman
Spearman
Runner
Khopesh
The above classes are all just variant fighters, with specific bonuses offset by reduced general abilities
War Cleric
This is just a variant cleric, with specific bonuses offset by reduced general abilities
Mage Scribe
Montoth
Templar
These are all just variant magic users, with specific bonuses offset by reduced general abilities
Royal Seal Bearer
Lockmaster
Guardian
These are all just variant thieves, with specific bonuses offset by reduced general abilities

Hollow World, Milenian Empire Sourcebook
Cleric of Halav
Cleric of Matera
Cleric of Petra
Cleric of Protius
These are all just variant clerics, with specific bonuses offset by reduced general abilities
Griffon Rider (A variant fighter class)

Rage of the Rakasta Adventure module
Rakasta (Oriental Themed)


OD&D Supplement I: Greyhawk

Dwarf Fighter
Dwarf Cleric (technically presented as an NPC option, but I won't tell TSR if you let your players use it)
Dwarf Thief
Dwarf Fighter/Thief
Elf Fighter
Elf Cleric
Elf Thief
Elf Fighter/Magic-User/Thief
Half-Elf (Treat as the standard Elf class, but note the level limits vary)
Half-Elf Fighter/Magic-User/Cleric (with lofty ability score requirements)
Hobbit (Halfling) Fighter
Hobbit Thief
Paladin (1st level start, different than the standard Companion Rules "prestige class")


OD&D Supplement II: Blackmoor

Monk
Assassin


OD&D Supplement III: Eldritch Wizardry

Druid
EW is also the source of the Classic D&D rules for PC psionics, If you care to adopt them.


Strategic Review Magazine #2

Ranger

Strategic Review Magazine #4

Illusionist

Strategic Review Magazine #6

Bard

(The) Dragon Magazine #2

Alchemist

(The) Dragon Magazine #3

Woman Fighter
Woman Magic-User
Woman Thief
Woman Cleric
Apparently Len Lakofka's campaign setting has no female Elves, Dwarves or Halflings! All kidding aside, I included these for completeness, I doubt anyone would actually use them today.
Healer
Scribe
Samurai
Dwarf Fighter
Dwarf Thief
Dwarf Cleric
Berserker
Idiot
Jester