| | | | | | | | |
| Subsidiary Name | | State or Other Jurisdiction of Incorporation or Organization |
| NextDecade LNG, LLC | | Delaware |
| NextDecade Services Company, LLC | | Delaware |
| NextDecade Payroll Services, LLC | | Delaware |
| NextDecade LNG Marketing, LLC | | Delaware |
| NEXT Carbon Solutions, LLC | | Texas |
| Rio Grande LNG Power Supply LLC | | Delaware |
| Rio Grande LNG Gas Marketing LLC | | Delaware |
| NextDecade LNG Marketing (Private) Ltd. | | Singapore |
| Rio Grande LNG Train 6, LLC | | Delaware |
| Rio Grande LNG Holdings, LLC | | Delaware |
| Rio Grande LNG Super Holdings, LLC | | Delaware |
| Rio Grande LNG Phase 1 Super FinCo Holdings, LLC | | Delaware |
| Rio Grande LNG Phase 1 Super FinCo, LLC | | Delaware |
| Rio Grande LNG Phase 1 FinCo Holdings, LLC | | Delaware |
| Rio Grande LNG Phase 1 FinCo, LLC | | Delaware |
| Rio Grande LNG Phase 1 Holdings, LLC | | Delaware |
| Rio Grande LNG Intermediate Super Holdings, LLC | | Delaware |
| Rio Grande LNG Intermediate Holdings, LLC | | Delaware |
| Rio Grande LNG, LLC | | Texas |
| Rio Grande LNG InsuranceCo, LLC | | Delaware |
| Rio Grande LNG Common Facilities LLC | | Delaware |
| Rio Grande LNG LandCo, LLC | | Delaware |
| Rio Grande LNG Phase 2 Super FinCo Holdings, LLC | | Delaware |
| Rio Grande LNG Phase 2 Super FinCo, LLC | | Delaware |
| Rio Grande LNG Phase 2 FinCo Holdings, LLC | | Delaware |
| Rio Grande LNG Phase 2 FinCo, LLC | | Delaware |
| Rio Grande LNG Phase 2 Intermediate Super Holdings, LLC | | Delaware |
| Rio Grande LNG Train 4 Intermediate Holdings, LLC | | Delaware |
| Rio Grande LNG Train 4 Holdings, LLC | | Delaware |
| Rio Grande LNG Train 4 LNG, LLC | | Delaware |
| Rio Grande LNG Train 5 Intermediate Holdings, LLC | | Delaware |
| Rio Grande LNG Train 5 Holdings, LLC | | Delaware |
| Rio Grande LNG Train 5 LNG, LLC | | Delaware |