FRONTIER OIL CORPORATION
LIST OF SUBSIDIARIES OF THE REGISTRANT
Frontier Oil Corporation (incorporated in Wyoming)
Wainoco Resources, Inc. (incorporated in Delaware),
a subsidiary of Frontier Oil Corporation.
Wainoco Oil & Gas Company (incorporated in Delaware),
a subsidiary of Wainoco Resources, Inc.
Frontier Holdings Inc. (incorporated in Delaware),
a subsidiary of Frontier Oil Corporation.
Frontier Refining & Marketing Inc. (incorporated in Delaware),
a subsidiary of Frontier Holdings Inc.
Frontier Refining Inc. (incorporated in Delaware),
a subsidiary of Frontier Refining & Marketing Inc.
Frontier Oil and Refining Company (incorporated in Delaware),
a subsidiary of Frontier Refining & Marketing Inc.
Frontier Pipeline Inc. (incorporated in Delaware),
a subsidiary of Frontier Refining & Marketing Inc.
Frontier El Dorado Refining Company (incorporated in Delaware),
a subsidiary of Frontier Refining & Marketing Inc.
