| Subsidiaries | State of Incorporation or Organization | ||||
| Acacia Natural Gas, L.L.C. | Delaware | ||||
| Ascension Pipeline Company, LLC (50%) | Delaware | ||||
| Bighorn Gas Gathering, L.L.C. (49.0%) | Delaware | ||||
| Bison Prairie Assurance, L.L.C. | Oklahoma | ||||
| Black Mesa Holdings, Inc. | Delaware | ||||
| Black Mesa Pipeline, Inc. | Delaware | ||||
| Black Mesa Pipeline Operations, L.L.C. | Delaware | ||||
| Black Mesa Technologies, Inc. | Oklahoma | ||||
| Border Midwestern Company | Delaware | ||||
| Bridgeline Holdings, L.P. | Delaware | ||||
| BridgeTex Pipeline Company, LLC (60%) | Delaware | ||||
| Cedar Cove Midstream LLC (30%) | Delaware | ||||
| Chisholm Pipeline Company (50%) | Delaware | ||||
| Chisholm Pipeline Holdings, L.L.C. | Delaware | ||||
| Cowtown Gas Processing Partners, L.P. | Texas | ||||
| Cowtown Pipeline Partners L.P. | Texas | ||||
| Crestone Energy Ventures, L.L.C. | Delaware | ||||
| Crestone Gathering Services, L.L.C. | Delaware | ||||
| Crestone Powder River, L.L.C. | Delaware | ||||
| Crestone Wind River, L.L.C. | Delaware | ||||
Double Eagle Pipeline LLC (50%) | Delaware | ||||
| Eiger Express Holdings, LLC (25.5%) | Delaware | ||||
| Elk Merger Sub II, L.L.C. | Delaware | ||||
| EnLink Barnett Gas Services GP, LLC | Delaware | ||||
| EnLink Barnett Gas Services, LLC | Delaware | ||||
| EnLink Calcasieu, LLC | Delaware | ||||
| EnLink CCS, LLC | Delaware | ||||
| EnLink Crude Marketing, LLC | Delaware | ||||
| EnLink Crude Pipeline LLC | Texas | ||||
| EnLink Delaware Crude Pipeline, LLC | Texas | ||||
| EnLink Energy GP, LLC | Delaware | ||||
| EnLink Gas Marketing, LP | Texas | ||||
| EnLink LIG Liquids, LLC | Louisiana | ||||
| EnLink LIG, LLC | Louisiana | ||||
| EnLink Louisiana Gathering, LLC | Louisiana | ||||
| EnLink Matli Holdings, LLC | Delaware | ||||
| EnLink Midcon Transport, LLC | Delaware | ||||
| EnLink Midcon, LLC | Delaware | ||||
| EnLink Midstream Finance Corporation | Delaware | ||||
| EnLink Midstream Funding, LLC | Delaware | ||||
| EnLink Midstream GP, LLC | Delaware | ||||
| EnLink Midstream Holdings GP, LLC | Delaware | ||||
| EnLink Midstream Holdings, LP | Delaware | ||||
| EnLink Midstream Operating GP, LLC | Delaware | ||||
| EnLink Midstream Operating, LP | Delaware | ||||
EnLink Midstream Manager, LLC | Delaware | ||||
| EnLink Midstream Partners, LP | Delaware | ||||
EnLink Midstream Services, LLC | Texas | ||||
| EnLink MXP Holding, LLC | Delaware | ||||
| EnLink NGL Marketing, LP | Texas | ||||
| EnLink NGL Pipeline, LP | Texas | ||||
| EnLink Nominee, LLC | Delaware | ||||
| EnLink North Texas Gathering, LP | Texas | ||||
| EnLink Oklahoma Crude Gathering, LLC | Delaware | ||||
EnLink Oklahoma Gas Processing, LP | Delaware | ||||
| EnLink Pelican, LLC | Delaware | ||||
| EnLink Permian II, LLC | Texas | ||||
| EnLink Permian, LLC | Texas | ||||
| EnLink Processing Services, LLC | Delaware | ||||
| EnLink SE Texas Crude Pipeline, LLC | Delaware | ||||
| EnLink Texas NGL Pipeline, LLC | Texas | ||||
| EnLink Texas Processing, LP | Texas | ||||
| EnLink Tuscaloosa, LLC | Louisiana | ||||
| Fort Union Gas Gathering, L.L.C. (50%) | Delaware | ||||
| GIP III Trophy GP, LLC | Delaware | ||||
| Gulf Coast Fractionators (38.75%) | Texas | ||||
| Heartland Pipeline Company (general partnership) (50%) | Texas | ||||
| HoustonLink Pipeline Company, LLC (50%) | Delaware | ||||
| Jefferson Island Storage & Hub, L.L.C. | Delaware | ||||
| Lost Creek Gathering Company, L.L.C. (35%) | Delaware | ||||
| Louisiana River Market, LLC | Delaware | ||||
| Magellan Ammonia Pipeline, L.P. | Delaware | ||||
Magellan Asset Services GP, LLC | Delaware | ||||
| Magellan Asset Services, L.P. | Delaware | ||||
| Magellan Crude Oil Pipeline Company GP, LLC | Delaware | ||||
| Magellan Crude Oil Pipeline Company, L.P. | Delaware | ||||
| Magellan GP, LLC | Delaware | ||||
Magellan Logistics & Services GP, LLC | Delaware | ||||
| Magellan Logistics & Services, L.P. | Delaware | ||||
| Magellan Midstream Holdings GP, LLC | Delaware | ||||
| Magellan Midstream Partners, L.P. | Delaware | ||||
Magellan NGL, LLC | Delaware | ||||
| Magellan OLP, L.P. | Delaware | ||||
Magellan Operating Company, LLC | Delaware | ||||
| Magellan Operating GP, LLC | Delaware | ||||
| Magellan Pipeline Company, L.P. | Delaware | ||||
| Magellan Pipeline GP, LLC | Delaware | ||||
| Magellan Pipeline Terminals GP, LLC | Delaware | ||||
| Magellan Pipeline Terminals, L.P. | Delaware | ||||
Magellan Pipelines Holdings GP, LLC | Delaware | ||||
| Magellan Pipelines Holdings, L.P. | Delaware | ||||
| Magellan Processing GP, LLC | Delaware | ||||
| Magellan Processing, L.P. | Delaware | ||||
| Magellan Terminals Holdings, L.P. | Delaware | ||||
MBTC Pipeline LLC (80%) | Delaware | ||||
| MDP Holdings, LLC | Delaware | ||||
| Medallion Crude Oil Logistics, LLC | Texas | ||||
| Medallion Gathering & Processing, LLC | Texas | ||||
| Medallion Midland Acquisition, L.P. | Delaware | ||||
| Medallion Midland Acquisition Partnership, L.P. | Delaware | ||||
| Medallion Midland Gathering, LLC | Texas | ||||
| Medallion Midland Partners, LLC | Delaware | ||||
| Medallion Operating Company, LLC | Delaware | ||||
| Medallion Parent Holdings, L.L.C. | Delaware | ||||
| Medallion Pipeline Company, LLC | Texas | ||||
| Medallion Producer Services, LLC | Texas | ||||
| MGP Marketing, LLC | Texas | ||||
MidCon Express, LLC (f/k/a Lazarus Gas Gathering, LLC) | Texas | ||||
| Mid Continent Market Center, L.L.C. | Kansas | ||||
| Mont Belvieu I Fractionation Facility (joint venture) (80%) | Texas | ||||
| MVP Terminalling, LLC (25.01%) | Delaware | ||||
| MXP Parent, LLC (15%) | Delaware | ||||
| Nine MileCo, LLC | Texas | ||||
| Northern Border Pipeline Company (general partnership) (50%) | Texas | ||||
| OkTex Pipeline Company, L.L.C. | Delaware | ||||
| ONEOK Arbuckle II Pipeline, L.L.C. | Oklahoma | ||||
| ONEOK Arbuckle North Pipeline, L.L.C. | Delaware | ||||
| ONEOK Arbuckle Pipeline, L.L.C. | Delaware | ||||
| ONEOK Bakken Pipeline, L.L.C. | Delaware | ||||
| ONEOK Bushton Processing, L.L.C. | Delaware | ||||
ONEOK Crude Marketing, L.L.C. | Delaware | ||||
ONEOK Delaware Gathering, LLC (f/k/a Delaware G&P LLC) | Delaware | ||||
ONEOK Delaware Midstream, LLC (f/k/a Delaware Processing LLC) | Delaware | ||||
| ONEOK Elk Creek Pipeline, L.L.C. | Oklahoma | ||||
| ONEOK Energy Services Company, II | Delaware | ||||
| ONEOK Energy Services Company, L.P. | Texas | ||||
| ONEOK Energy Services Holdings, L.L.C. | Oklahoma | ||||
| ONEOK Field Services Company, L.L.C. | Oklahoma | ||||
| ONEOK Gas Storage Holdings, L.L.C. | Delaware | ||||
| ONEOK Gas Storage, L.L.C. | Oklahoma | ||||
| ONEOK Gas Transportation, L.L.C. | Oklahoma | ||||
| ONEOK Gulf Coast Pipeline, L.L.C. | Delaware | ||||
| ONEOK Hydrocarbon GP, L.L.C. | Delaware | ||||
| ONEOK Hydrocarbon Holdings, L.L.C. | Delaware | ||||
| ONEOK Hydrocarbon Southwest, L.L.C. | Delaware | ||||
| ONEOK Hydrocarbon, L.L.C. | Delaware | ||||
| ONEOK Hydrocarbon, L.P. | Delaware | ||||
| ONEOK ILP GP, L.L.C. | Delaware | ||||
| ONEOK Leasing Company | Delaware | ||||
| ONEOK MB I, L.P. | Delaware | ||||
ONEOK Midland Midstream, LLC (f/k/a Coronado Midstream LLC) | Texas | ||||
| ONEOK Midstream Gas Supply, L.L.C. | Oklahoma | ||||
| ONEOK Mont Belvieu Properties, L.L.C. | Delaware | ||||
| ONEOK Mont Belvieu Storage Company, L.L.C. | Delaware | ||||
| ONEOK NGL Distribution System, L.L.C. | Texas | ||||
| ONEOK NGL Gathering, L.L.C. | Delaware | ||||
| ONEOK NGL Pipeline, L.L.C. | Delaware | ||||
| ONEOK North System, L.L.C. | Delaware | ||||
| ONEOK Northern Border Pipeline Company Holdings, L.L.C. | Oklahoma | ||||
| ONEOK Overland Pass Holdings, L.L.C. | Oklahoma | ||||
| ONEOK Parking Company, L.L.C. | Delaware | ||||
| ONEOK Partners GP, L.L.C. | Delaware | ||||
| ONEOK Partners Intermediate Limited Partnership | Delaware | ||||
| ONEOK Partners, L.P. | Delaware | ||||
| ONEOK Permian NGL Operating Company, L.L.C. | Delaware | ||||
| ONEOK Pipeline Holdings, L.L.C. | Delaware | ||||
ONEOK Power Solutions, L.L.C. | Delaware | ||||
| ONEOK Rockies Investments, L.L.C. | Delaware | ||||
| ONEOK Rockies Midstream, L.L.C. | Delaware | ||||
| ONEOK Services Company, L.L.C. | Oklahoma | ||||
| ONEOK Southeast Texas NGL Pipeline, L.L.C. | Oklahoma | ||||
| ONEOK Sterling III Pipeline, L.L.C. | Oklahoma | ||||
| ONEOK TCX Holdings, L.L.C. | Delaware | ||||
| ONEOK Texas Gas Storage, L.L.C. | Texas | ||||
| ONEOK Underground Storage Company, L.L.C. | Kansas | ||||
| ONEOK Unit Holdings, Inc. | Delaware | ||||
| ONEOK Ventures, L.L.C. | Oklahoma | ||||
| ONEOK Ventures Direct Investments, L.L.C. | Oklahoma | ||||
| ONEOK Ventures Fund Investments, L.L.C. | Oklahoma | ||||
| ONEOK VESCO Holdings, L.L.C. | Delaware | ||||
| ONEOK West Texas NGL Pipeline, L.L.C. | Texas | ||||
| ONEOK Western Trail Pipeline, L.L.C. | Oklahoma | ||||
| ONEOK WesTex Transmission, L.L.C. | Delaware | ||||
ONEOK Wyoming Midstream, L.L.C. | Delaware | ||||
ONEOK Wyoming Midstream Holdings, L.L.C. | Delaware | ||||
| Overland Pass Pipeline Company LLC (50%) | Delaware | ||||
| Powder Springs Logistics, LLC (50%) | Delaware | ||||
| Redcliff Midstream, LLC | Delaware | ||||
| Roadrunner Gas Transmission Holdings, LLC (50%) | Delaware | ||||
| Roadrunner Gas Transmission, LLC (100% owned by Roadrunner Gas Transmission Holdings, LLC) | Delaware | ||||
| Sabine Hub Services LLC | Delaware | ||||
| Sabine Pass Plant Facility Joint Venture | Texas | ||||
| Sabine Pipe Line LLC | Delaware | ||||
| Saddlehorn Pipeline Company, LLC (40%) | Delaware | ||||
| Saguaro Connector Pipeline, L.L.C. | Delaware | ||||
| Saguaro Connector Pipeline Holdings, L.L.C. | Delaware | ||||
| Seabrook Logistics, LLC (50%) | Delaware | ||||
Seabrook Pipeline, LLC (100% owned by Seabrook Logistics, LLC) | Delaware | ||||
Seabrook Terminal, LLC (100% owned by Seabrook Logistics, LLC) | Delaware | ||||
Sun Belt Connector, L.L.C. | Delaware | ||||
| SWG Pipeline, L.L.C. | Texas | ||||
Texas City Logistics LLC (50%) | Delaware | ||||
| Texas Frontera, LLC (50%) | Delaware | ||||
| Tiburon Operating LLC | Texas | ||||
| TOM-STACK, LLC | Delaware | ||||
| TXGC Pipelines, L.L.C. | Delaware | ||||
| TXGC Properties, L.L.C. | Delaware | ||||
| Venice Energy Services Company, L.L.C. (10.1765%) | Delaware | ||||