Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

(As of June 30, 2011)

 

Subsidiary

   State of Incorporation    Ownership  

Nautilus Poplar, LLC

        83.50

Magellan Petroleum Australia Limited

   Queensland, Australia      100.00

Magellan Petroleum Australia Limited owns the following subsidiaries directly or indirectly:

     

Magellan Petroleum (N.T.) Pty. Ltd.

   Queensland, Australia      100.00

Paroo Petroleum Pty. Ltd.

   Queensland, Australia      100.00

Paroo Petroleum (Holdings), Inc.

   Delaware, U.S.A.      100.00

Paroo Petroleum (USA), Inc.

   Delaware, U.S.A.      100.00

Magellan Petroleum (W.A.) Pty. Ltd.

   Queensland, Australia      100.00

Magellan Petroleum (U.K.) Limited

   United Kingdom      100.00

Magellan Petroleum (Eastern) Pty. Ltd.

   Queensland, Australia      100.00

United Oil & Gas Co. (N.T.) Pty. Ltd.

   Queensland, Australia      100.00

Magellan Petroleum (Qld.) Pty. Ltd.

   Queensland, Australia      80.00

Magellan Petroleum (Offshore) Pty. Ltd.

   Queensland, Australia      100.00

Jarl Pty. Ltd.

   Queensland, Australia      100.00