Railway companies of Michigan

List of railway companies in the American state of Michigan.

Companies based in the United States

 * Amtrak (AMTK), passenger on freight lines
 * New York Western Railroad (NYW), freight
 * North Western Pacific Railroad (NWP), freight and passenger
 * Pennsylvania Seaboard Railroad (PS), freight
 * Pere Marquette Railway (PM), freight

Companies based outside of the United States

 * Canadian National Railway (CN), freight
 * Canadian Pacific Railway (CP), freight
 * VIA Rail (VIA), passenger on freight lines

Shortline and terminal railways

 * Michigan Southern Railroad (MSO)

Defunct railways
Years shown here refer to the period in which a given company operated in Michigan; they may have existed elsewhere before or after these years.