Exhibit 21.1

Subsidiaries of the Registrant

Name:  Ramtron K.K.

Incorporated in Japan

Doing Business as:  Ramtron K.K.

Name:  Ramtron LLC

Organized in the State of Colorado

Doing Business as:  Ramtron LLC

Name:  Ramtron Canada Inc.

Incorporated in Canada

Doing Business as:  Ramtron Canada Inc.

Name:  Ramtron Asia Limited

Incorporated in Hong Kong and China

Doing Business as:  Ramtron Asia Limited

Name:  Ramtron Asia Pte. Ltd.

Incorporated in Singapore

Doing Business as:  Ramtron Asia Pte. Ltd

Name:  Ramtron Asia Pte. Ltd. - Taiwan Branch

Incorporated in Taiwan

Doing Business as:  Ramtron Asia Pte. Ltd - Taiwan Branch

Name:  Ramtron UK Limited

Incorporated in United Kingdom

Doing Business as:  Ramtron UK Limited