N
- Napanee, Tamworth and Quebec Railway
- National Construction Company (Limited)
- National Terminals of Canada
- National Transcontinental Railway
- National Transcontinental Railway Branch Lines Company
- Nelson Valley Railway and Transportation Company
- New Brunswick and Prince Edward Railway
- New Brunswick and Prince Edward Island Railway
- New England Elevator Company
- Newfoundland Hotel
- Newfoundland Northern and Western Railway
- Newfoundland Railway
- Newfoundland Railway Steamship Services
- New Glasgow Iron, Coal and Railway
- New London Northern Railroad
- New London, Willimantic and Palmer Railroad
- New London, Willimantic and Springfield Railroad
- New Westminster Southern Railway
- Niagara and St. Catharines Street Railway
- Niagara Falls International Bridge Company
- Niagara Falls Suspension Bridge Company
- Niagara Falls, Wesley Park and Clifton Tramway Company
- Niagara, Hamilton and Pacific Railway
- Niagara Lower Arch Bridge Company
- Niagara, St. Catharines and Toronto Navigation Company (Limited)
- Niagara, St. Catharines and Toronto Railway
- Nictaux and Atlantic Railway
- Norfolk Railway
- North Eastern Railway
- North Grey Railway
- North Railway
- North Shore Railway
- North Shore Railway and St. Maurice Navigation Company
- North Simcoe Railway
- Northern Alberta Railways Company
- Northern Consolidated Holding Company
- Northern Extension Railway
- Northern Extension Railways Company
- Northern and North-Western Railway
- Northern, North-Western and Sault Ste. Marie Railway
- Northern and Pacific Junction Railway
- Northern Pacific and Manitoba Railway
- Northern Railroad, (N.Y.)
- Northern Railway, (N.B.)
- Northern Railway of Canada
- Northern Townsites
- Northumberland Straits Tunnel Railway
- North Western Grand Trunk Railway of Illinois and Indiana
- North Western Grand Trunk Railway of Michigan
- Norway Branch Railroad
- Nova Scotia Central Railway
- Nova Scotia Eastern Railway
- Nova Scotia Iron and Steel Company
- Nova Scotia, Nictaux and Atlantic Central Railway
- Nova Scotia Railway
- Nova Scotia Southern Railway
- Nova Scotia Southern Railway
- Nova Scotia Steel and Coal Company
- Nova Scotia Iron and Steel Company
- Nova Scotian Hotel, Halifax
Read more about this topic: List Of Canadian National Railways Companies