Exhibit 21. Subsidiaries of the Registrant BURLINGTON NORTHERN SANTA FE CORPORATION BNSF Acquisition, Inc. (DE) 100% Burlington Northern Santa Fe British Columbia, Ltd. (DE) 100% The Burlington Northern and Santa Fe Railway Company (DE) 100% Alameda Belt Line (CA) 50% The Belt Railway Company of Chicago (IL) 16.6% BN Leasing Corporation (DE) 100% The Burlington Northern and Santa Fe Railway Company de Mexico, S.A. de C.V. (Mexico) 50% Burlington Northern Dock Corporation (DE) 100% Burlington Northern International Services, Inc. (DE) 100% The Burlington Northern and Santa Fe Railway Company de Mexico, S.A. de C.V. (Mexico) 50% Burlington Northern (Manitoba) Limited (Manitoba) 100% Burlington Northern - Mexico Inc. (DE) 100% Burlington Northern Railroad Holdings, Inc. (DE) 100% Burlington Northern Relocation Services Inc. (TX) 100% Burlington Northern Santa Fe Manitoba, Inc. (DE) 100% Burlington Northern Worldwide, Inc. (DE) 100% Camas Prairie Railroad Company (OR) 50% Central California Traction Company (CA) 33.3% Constellation 130, Inc. (CA) 100% The Dodge City and Cimarron Valley Railway Company (KS) 100% Electro Northern, Inc. (DE) 100% The Gulf and Inter-State Railway Company of Texas (TX) 100% Houston Belt & Terminal Railway Company (TX) 50% INB Corp. (NV) 100% Iowa Transfer Railway Company (IA) 25% Kansas City Terminal Railway Company (MO) 25% Limited Partnership Management, Inc. (DE) 100% Longview Switching Company (WA) 25% Los Angeles Junction Railway Company (CA) 100% Metrovias S.A. (Argentina) 16.6% Midwest/Northwest Properties Inc. (DE) 100% M-R Holdings Acquisition Company (DE) 100% M T Properties, Inc. (MN) 37.8% Northern Radio Limited (British Columbia) 100% The Oakland Terminal Railway (CA) 50% Oklahoma City Junction Railway Company (OK) 100% Paducah & Illinois Railroad Company (KY) 33.3% Pine Canyon Land Company (DE) 100% Portland Terminal Railroad Company (OR) 40% Rio Grande, El Paso and Santa Fe Railroad Company (TX) 100% Santa Fe Forwarding Company (DE) 100% Santa Fe Pacific Insurance Company (VT) 100% Santa Fe Pacific Railroad Company (Act of Congress) 100% Santa Fe Rail Equipment Company (DE) 100% Santa Fe Receivables Corporation (DE) 100% Santa Fe Terminal Services, Inc. (DE) 100% SFP Pipeline Holdings, Inc. (DE) 100% Santa Fe Pacific Pipelines, Inc. (DE) 100% Star Lake Railroad Company (DE) 100% St. Joseph Terminal Railroad Company (MO) 50% Sunset Communications Company (DE) 100% Sunset Railway Company (CA) 50% Terminal Railroad Association of St. Louis (MO) 14.3% Texas City Terminal Railway Company (TX) 33.3% Trenes de Buenos Aires S.A. 16.6% TTX Company (DE) 17% Walker-Kurth Lumber Company (TX) 100% Western Fruit Express Company (DE) 100% The Wichita Union Terminal Railway Company (KS) 66.6% Winona Bridge Railway Company (MN) 100% The Zia Company (DE) 100%