Exhibit 21.1

Subsidiaries of TransAtlantic Petroleum Ltd.



|                                                               |  |                              
|-------------------------------------------------------------- |  | -----------------------------
|Subsidiary                                                     |  | Jurisdiction of Incorporation
|Incremental Petroleum Limited                                  |  | Australia                    
|Incremental Petroleum (Butmah) Pty. Ltd.                       |  | Australia                    
|Incremental Petroleum (Iraq) Pty. Ltd.                         |  | Australia                    
|Incremental Petroleum (Qara Chauk) Pty. Ltd.                   |  | Australia                    
|Incremental Petroleum (Selmo) Pty. Ltd.                        |  | Australia                    
|TransAtlantic Australia Pty. Ltd.                              |  | Australia                    
|TransAtlantic Exploration Mediterranean International Pty Ltd. |  | Australia                    
|TransAtlantic (Holdings) Australia Pty. Ltd.                   |  | Australia                    
|DMLP, Ltd.                                                     |  | Bahamas                      
|Talon Exploration, Ltd.                                        |  | Bahamas                      
|TransAtlantic Maroc, Ltd.                                      |  | Bahamas                      
|TransAtlantic Worldwide, Ltd.                                  |  | Bahamas                      
|Viking Geophysical Services, Ltd.                              |  | Bahamas                      
|TransAtlantic Turkey, Ltd.                                     |  | Bahamas                      
|Viking Wireline Services, Ltd.                                 |  | Bahamas                      
|Longe Energy Limited                                           |  | Bermuda                      
|Viking International Limited                                   |  | Bermuda                      
|DMLP GP Inc.                                                   |  | British Virgin Islands       
|DMLP LP Inc.                                                   |  | British Virgin Islands       
|Incremental Petroleum (USA) Inc.                               |  | California                   
|Incremental Petroleum (USA) KMD LLC                            |  | California                   
|Incremental Petroleum (USA) MC F LLC                           |  | California                   
|Incremental Petroleum (USA) SEKND LLC                          |  | California                   
|TransAtlantic Petroleum (USA) Corp.                            |  | Colorado                     
|Longe Energy Cyprus Limited                                    |  | Cyprus                       
|TransAtlantic Petroleum Cyprus Limited                         |  | Cyprus                       
|MOS Viking SARL                                                |  | Morocco                      
|TransAtlantic Worldwide Romania SRL                            |  | Romania                      
|Viking Oilfield Services SRL                                   |  | Romania