List of reporting marks: K

K

 * KABX - Kaber Company, Canadian Resource Distribution, Inc.
 * KACX - Kaiser Aluminum and Chemical Corporation
 * KAIX - Rinker Materials Corporation
 * KAMX - Kamen, Inc.
 * KARX - Hamilton Elevators
 * KBSR - Kankakee, Beaverville and Southern Railroad
 * KBSZ - Kankakee, Beaverville and Southern Railroad
 * KCCX - Kennecott Utah Copper Corporation
 * KCDX - Eastman Kodak Company
 * KCGX - Kaiser Cement Corporation, Southdown, Inc.
 * KCIX - ARCO Chemical Company, Nova Chemicals, Inc.
 * KCLX - Kansas City Power and Light Company
 * KCMO - Kansas City, Mexico & Orient
 * KCMX - Kidd Creek Mines, Ltd.
 * KCNW - Kelley's Creek and Northwestern Railroad
 * KCPX - Kemira Chemicals Canada, Inc.
 * KCR - Keewatin Railway Company
 * KCRX - Kootenay Central Rail Services, Ltd.
 * KCS - Kansas City Southern Railway
 * KCSM - Kansas City Southern de Mexico
 * KCSU - Kansas City Southern Railway
 * KCSZ - Kansas City Southern Railway
 * KCT - Kansas City Terminal Railway
 * KCTV - KCT Railway
 * KCWB - Kansas City Westport Belt
 * KCWX - Kimberly-Clark of Canada, Ltd.
 * KDCX - Eastman Chemical Canada, Inc.
 * KDEX - GLNX Corporation
 * KE  - Kansas Eastern Railroad
 * KEBX - Ronald L. Boothman Remainder Trust
 * KELX - Kellogg Company
 * KENN - Kennecott Company Railroad
 * KENX - KENX Associates
 * KET - Kennewick Terminal Railway
 * KEWH - Kewash Railroad
 * KEYX - Keywell Corporation
 * KFGX - Knauf Fiber Glass, GmbH
 * KFMX - Oils Unlimited
 * KFPX - Koppers Company, Inc.
 * KFR - Kettle Falls International Railway
 * KFTX - J and J Railcar Leasing, LLC
 * KGCX - Koppers Company, Inc., INDSPEC Chemical Corporation
 * KGFX - Kingsford Company
 * KGLX - Commonwealth Edison Company
 * KGRX - Kasgro Rail Corporation
 * KIIX - Koppers Industries, Inc.
 * KJR - Kiski Junction Railroad
 * KJRY - Keokuk Junction Railway
 * KKLU - K Line
 * KKLZ - K Line
 * KKRR - Knox and Kane Railroad
 * KKRX - Kaskaskia Regional Port District Railroad
 * KKTU - Kerr Steamship K Line
 * KLCU - IBJ Leasing Company, Ltd.
 * KLL - Klickitat Log and Lumber, J. Neils, St. Regis Paper Co.
 * KLSC - Kalamazoo, Lake Shore and Chicago Railway
 * KLSX - Kerford Limestone Company
 * KM  - Kansas and Missouri Railway and Terminal Company
 * KMCU - Mitsui O.S.K. Lines, Ltd.
 * KMCX - Kerr-Mcgee Coal Corporation
 * KMEU - K Line
 * KMFX - Kaolin Mushroom Farms, Inc.
 * KMTU - Hyundai Merchant Marine (America), Inc.
 * KMTX - Kinder Morgan, Inc.
 * KMTZ - Hyundai Merchant Marine (America), Inc.
 * KMUX - Kershaw Manufacturing Company
 * KNC - Kingcome Navigation
 * KNDX - Golden State Metals, Inc., KND Rail Services, Inc.
 * KNLU - Nedlloyd Lines
 * KNOR - Klamath Northern Railway
 * KNOX - Philips Metals, Inc.
 * KNWA - Kanawha River Railroad
 * KO  - Kansas and Oklahoma Railroad
 * KOAX - Coca-Cola USA a division of the Coca-Cola Company
 * KOG - Kansas, Oklahoma and Gulf Railway; Missouri Pacific Railroad; Union Pacific Railroad
 * KPCX - Koppers Company, Inc., Koppers Industries, Inc.
 * KPCZ - K and P Cartage Company
 * KPGX - Kentucky Processing Company
 * KPLU - K Line
 * KPLX - Koppel, Inc., Western Resources, Inc.
 * KPPX - KRATON Polymers US, LLC
 * KPR - Kelowna Pacific Railway, Ltd.
 * KPRR - Kodak Park Railroad
 * KPRX - Kauai Plantation Railway
 * KPXX - Progress Rail Services Corporation
 * KRDX - KRDX Company
 * KRIX - GE Rail Services Corporation
 * KRL - Kasgro Rail Lines
 * KRPX - Associated Electric Cooperative, Inc.
 * KRR - Kiamichi Railroad
 * KRSX - Kurguz Enterprises, Inc. (Kurguz Railway Services)
 * KRXX - Knife River Corp.
 * KRT - Kanawha River Terminal
 * KSCU - Korea Shipping Corporation
 * KSCZ - Korea Shipping Corporation
 * KSMX - Kosmos Cement Company, Inc.
 * KSPX - K+S Potash Canada GP
 * KSRY - Kosciusko and Southwestern Railway
 * KSW - Kansas and Oklahoma Railroad
 * KT  - Kentucky and Tennessee Railway
 * KTR - Kendallville Terminal Railway
 * KTTX - Trailer Train Company, TTX Company
 * KTX - ACF Industries, Inc.
 * KUCX - Kentucky Utilities Company
 * KVR - Kern Valley Railroad
 * KWCU - World Container Leasing, Inc.
 * KWT - K.W.T. Railway
 * KWTR - Keota Washington Transportation Company
 * KWUX - Utility Power Corporation, Siemens Westinghouse Power Corporation
 * KXHR - Knoxville and Holston River Railroad
 * KYLE - Kyle Railroad
 * KYLU - NYK Line
 * KYRX - Progress Rail Services Corporation