Category:Companies based in Ontario

• Crown corporations of Ontario (1 C)
• Manufacturing companies based in Ontario (1 C, 4 P)
• Restaurants in Ontario (1 C, 2 P)

B

• Companies based in Brampton (4 P)

D

• Defunct companies of Ontario (1 C, 3 P)

G

• Companies based in Guelph (1 P)

H

• Companies based in Hamilton, Ontario (5 P)

L

• Companies based in London, Ontario (3 P)

O

• Companies based in Oakville, Ontario (2 P)
• Ontario railways (3 C)
• Companies based in Ottawa (2 C, 17 P)

P

• Companies based in the Regional Municipality of Peel (3 C)

S

• Companies based in St. Catharines (1 C, 2 P)

T

• Companies based in Thunder Bay (1 P)
• Companies based in Toronto (17 C, 116 P)

W

• Companies based in Waterloo Region (2 C)
• Companies based in Windsor, Ontario (2 P)

Y

• Companies based in the Regional Municipality of York (2 C, 1 P)

A

• All You Need Music
• Arva Industries

B

• Bayshore Broadcasting
• Blancride
• BlockDos

C

• Cheekbone Beauty
• ConDrain

D

• Daymak Inc.

E

• E & E McLaughlin
• EnPowered
• Entegrus Powerlines

F

• Farandula Records

I

• Infineca
• IranPoll

M

• MEI Academy
• Mime Radio
• Mold Masters

O

• Onlia (Canada)

R

• Real Matters
• RentSeeker Inc

S

• SwiftJet Inc.

T

• TechMinds Inc

W

• WingsUp!