EXHIBIT 21


                       SUBSIDIARIES OF UNOCAL CORPORATION




 
 
 
                                        
                                            Organized
                                              under
Name of Company                              law of
- ----------------------------------------   -----------
 
 
Union Oil Company of California, dba       California
 "UNOCAL"
 
 Philippine Geothermal, Incorporated       California
 
 Unocal International Corporation            Nevada
 
  Unocal Canada Limited                      Alberta
 
  Unocal Indonesia, Limited                  Bermuda
 
  Unocal Netherlands B.V.                  Netherlands
 
  Unocal Thailand, Limited                   Bermuda
 

  The indented companies are consolidated subsidiaries of Union Oil Company of
California.  The names of 141 subsidiaries are omitted inasmuch as such
subsidiaries, considered in the aggregate as a single subsidiary, would not
constitute a significant subsidiary.