B

• Boomers (1 C, 19 P)

C

• Caesar's Legion (1 C, 51 P)
• Chairmen (2 C, 3 P)
• Crimson Caravan Company (1 C, 2 P)

D

• Dead Money factions (1 C, 1 P)

F

• Fallout: New Vegas mentioned-only factions (3 C, 32 P)
• Fallout: New Vegas religions (4 P)
• Fallout: New Vegas reputations (1 C, 1 P)
• Fiends (1 C, 7 P)
• Followers of the Apocalypse (1 C, 5 P)

G

• Great Khans (2 C, 10 P)
• Gun Runners (1 C, 2 P)

H

• Honest Hearts factions (4 C, 5 P)

J

• Jackals (1 C, 5 P)

K

• Khans (4 C, 4 P)
• Kings (1 C, 3 P)

L

• Fallout: New Vegas faction logos (33 F)
• Lonesome Road factions (1 C)

M

• Maud's Muggers (1 C, 2 P)

N

• New California Republic (10 C, 77 P)
• New California Republic Army (24 P)

O

• Old World Blues factions (2 P)
• Omertas (2 C, 3 P)

P

• Powder Gangers (1 C, 13 P)

V

• Vipers (1 C, 6 P)

W

• White Glove Society (2 C, 3 P)

• Fallout: New Vegas factions

1

• 1st Reconnaissance Battalion

B

• Boomers
• Bravo Company
• Bright Brotherhood
• Brotherhood of Steel
• Brotherhood of Steel (Mojave chapter)

C

• Caesar's Legion
• Cassidy Caravans
• Chairmen
• Crimson Caravan

D

• Davison's nightkin
• Durable Dunn's

E

• Enclave
• Enclave Remnants

F

• Fiends
• Followers of the Apocalypse
• Free Economic Zone of New Vegas

G

• Greasers
• Griffin Wares
• Gun Runners

H

• Robert House

J

• Jackals

K

• Khans
• Kings

M

• Maud's Muggers (faction)
• The Misfits
• Mojave Express

N

• New California Republic
• New California Republic Army
• New California Republic Military Police
• New California Republic Rangers

O

• Office of Science and Industry
• Omertas

P

• Powder Gangers

R

• Rad Pack Revue
• Raiders
• Red Okie Centuria

S

• Scorpions (gang)
• State of Utobitha
• Stockmen's Association

T

• Three Families
• Tribes

V

• Van Graffs
• Vipers

W

• Westside militia
• White Glove Society

Z

• Zetan aliens