Calypso Uranium Appoints Jon Thorson as Director

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Dec. 23, 2009) -

NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S. WIRE SERVICES

Calypso Uranium Corp. (TSX VENTURE:CLP) ("Calypso" or the "Company") is pleased to announce the appointment of Jon Thorson to the board of directors. Mr. Thorson holds a PhD in geology and is a Certified Professional Geologist based in Colorado with over 44 years experience providing geological mapping services, exploration advice and management for major and junior exploration companies in the minerals and petroleum industries. Mr. Thorson is experienced in the interpretation of sedimentary environments and the inter-relation of tectonic activity and stratigraphy and has a broad background in geology, geochemistry, petrology, stratigraphy, paleontology, and structural geology, including 18 years as a consultant and 5 years in petroleum exploration.

Stephen Barley, President of Calypso stated: "Jon Thorson is a respected senior geologist with specific skill sets that will be very beneficial to the Company based on our intention to become increasingly active in 2010. Jon has previously consulted to Calypso and is therefore familiar with both our large mineral properties and our exploration team in Mendoza. He will be an excellent addition to our Board of Directors."

Calypso is an uranium exploration and development company with over 447,000 hectares of highly prospective uranium properties known as the Huemel, Campesino Norte, La Pintada, Rahueco and Central Block located in three separate provinces of Argentina.

CALYPSO URANIUM CORP.

Per:

Stephen Barley, President & CEO

This press release does not constitute an offer to purchase securities. The securities to be offered in the offering have not been and will not be registered under the United States Securities Act of 1933, as amended, or any state securities laws and may not be offered or sold in the United States or to, or for the benefit or account of, a U.S. person, except pursuant to an available exemption from such registration requirements.

This news release may contain forward-looking statements based on assumptions and judgments of management of the Company regarding future events or results. Such statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ materially from those reflected in the forward-looking statements. The Company disclaims any intention or obligation to revise or update such statements except as may be required by law.

Shares Outstanding: 50,630,819



Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.


For more information, please contact

Calypso Uranium Corp.
Investor Relations
1-604-639-4671
1-604-639-4670 (FAX)
info@calypsouranium.com
http://www.calypsouranium.com/


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