Editing 4-8-4 (section)

===The Northern name===
Since the {{nowrap|4-8-4}} was first used by the [[Northern Pacific Railway]], the type was named "Northern". Most North American railroads used this name, but some adopted different names.
* "Heavy Mountain" or "New Mountain" on the [[Atchison, Topeka, and Santa Fe]] (ATSF). Original blueprints of class 3751 designate the 4-8-4 as a "Mountain" or "Heavy Mountain". The index to the blueprints reference the 3751 class as "Mountain, 4-Wheel Trailer". Early correspondence of the ATSF refer to this type as "New Mountains". The Santa Fe never adopted the "Northern" designation. 
* "Big Apple" on the [[Central of Georgia Railway]] (CG).
* "Confederation" on the [[Canadian National Railway]] (CN), named because they were purchased in 1927, the 60th anniversary of Canada's confederation in 1867. The "Confederation" 4-8-4s  were later renamed by the CN to the generic "Northern" name in later years.
* "Dixie" on the [[Nashville, Chattanooga and St. Louis Railway]] (NC&StL).
* "Golden State" on the [[Southern Pacific Transportation Company|Southern Pacific Railroad]] (SP), temporarily renamed "General Service" during the [[Second World War]] and also referred to as "GS" by [[Western Pacific Railroad|Western Pacific]] for those GSs which were diverted to the WP from SP's order by the [[War Production Board]].
* "Greenbrier" on the [[Chesapeake and Ohio Railway]] (C&O).
* "J" on the [[Norfolk and Western Railway]] (N&W).
* "FEF" (Four-Eight-Four) on the [[Union Pacific Railroad]] (UP).
* "Niagara" on the [[New York Central Railroad]] (NYC).
* "Niágara" on the {{lang|es|i=unset|[[Ferrocarriles Nacionales de México]]}} (N de M) and in [[Brazil]].
* "Pocono" on the [[Delaware, Lackawanna and Western Railroad]] (Lackawanna).
* "Potomac" on the [[Western Maryland Railway]] (WM).
* "Wyoming" on the [[Lehigh Valley Railroad]] (LV).

The [[Richmond, Fredericksburg and Potomac Railroad]] (RFP) gave each of its three {{nowrap|4-8-4}} classes a separate name, the "General" of 1937, the "Governor" of 1938 and the "Statesman" of 1944.