• Companies based in Idaho by populated place (1 C)
• Defunct companies based in Idaho (1 C, 4 P)

A

• Architecture firms based in Idaho (8 P)

B

• Banks based in Idaho (1 C, 3 P)

C

• Cooperatives based in Idaho (1 C, 2 P)
• Credit unions based in Idaho (2 P)

F

• Food and drink companies based in Idaho (1 C, 7 P)

H

• Health care companies based in Idaho (1 P)

M

• Manufacturing companies based in Idaho (1 C, 4 P)

P

• Privately held companies based in Idaho (5 P)

R

• Restaurants in Idaho (4 P)
• Rocky Mountain Construction (1 C, 2 P)

T

• Transportation companies based in Idaho (2 C, 2 P)

*

• List of companies based in Idaho

B

• Buck Knives

C

• Chesbro Music Company
• Caxton Press (United States)
• CCI Ammunition
• Chelton Flight Systems
• CityPASS
• Commercial Tire
• CSHQA

D

• D. L. Evans Bank
• Dave Smith Motors

E

• E B Meyer Inc.
• Earth Point

G

• Grand Teton Vodka

H

• Hecla Mining

I

• Idacorp
• Iliad Media Group

J

• Jacksons Food Stores

K

• King's Variety Store
• Klim (clothing)

M

• Morrison–Knudsen
• MPC Corporation

N

• Native American Services Corp.

O

• The Owyhee Avalanche

P

• Pacific Press Publishing Association
• Phos-Chek
• Preco
• Press-A-Print

Q

• Quest Aircraft

R

• Reel Theatres
• Rocky Mountain Construction

S

• Scottevest
• SeaQuest (aquariums)
• Simplot
• Solar Roadways
• StanCraft Boat Company
• Sunshine Minting

T

• TriGeo Network Security
• TSheets

Y

• Yellowstone Bear World