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Exhibit 21

Principal Subsidiaries of Hewlett-Packard Company

        The registrant's principal subsidiaries and affiliates as of October 31, 2010 are included in the list below.

ARGENTINA

—Hewlett-Packard Argentina S.R.L.

AUSTRALIA

—Hewlett-Packard Australia Pty. Limited

—HP Financial Services (Australia) Pty Limited

AUSTRIA

—Hewlett-Packard Gesellschaft m.b.H.

BELGIUM

—Hewlett-Packard Belgium SPRL/BVBA

—Hewlett-Packard Coordination Center CVBA/SCRL

BERMUDA

—High Tech Services Insurance, Ltd.

BRAZIL

—Hewlett-Packard Brasil Ltda.

—HP Financial Services Arrendamento Mercantil S.A.

BULGARIA

—Hewlett-Packard Bulgaria EooD

CANADA

—Hewlett-Packard (Canada) Co.

—Hewlett-Packard Financial Services Canada Company

CAYMAN ISLANDS

—Compaq Cayman Holdings Company

CHILE

—Hewlett-Packard Chile Comercial Limitada

—HP Financial Services (Chile) Limitada

CHINA

—Hewlett-Packard Technology (Shanghai) Co., Ltd.

—Hewlett-Packard Trading (Shanghai) Co. Ltd.

—China Hewlett-Packard Co., Ltd.

—Shanghai Hewlett-Packard Co. Ltd.

—Hewlett-Packard (Chongqing) Co., Ltd

—Hangzhou H3C Technologies Co., Ltd

COLOMBIA

—Hewlett-Packard Colombia Ltda

COSTA RICA

—Hewlett-Packard Costa Rica Ltda.

CROATIA

—Hewlett-Packard d.o.o.

CYPRUS

—Hewlett-Packard Cyprus Ltd

CZECH REPUBLIC

—Hewlett-Packard s.r.o.

DENMARK

—Hewlett-Packard ApS

ECUADOR

—Hewlett-Packard Ecuador CIA Ltda.

EGYPT

—Hewlett-Packard Egypt Ltd.

FINLAND

—Hewlett-Packard OY

FRANCE

—Hewlett-Packard France SAS

GERMANY

—Hewlett-Packard GmbH

GREECE

—Hewlett-Packard Hellas EPE

GUATEMALA

—Hewlett-Packard Guatemala, Limitada

HONG KONG

—Hewlett-Packard HK SAR Ltd.

HUNGARY

—Hewlett-Packard Magyarország Kft.

INDIA

—Hewlett-Packard Globalsoft Limited

—Hewlett-Packard India Sales Private Limited

—MphasiS Limited

INDONESIA

—PT. Hewlett-Packard Indonesia

IRELAND

—Hewlett-Packard International Bank Public Limited Company

—Hewlett-Packard Ireland Limited

—Hewlett-Packard (Manufacturing) Ltd.

ISRAEL

—Hewlett-Packard Indigo Ltd.

ITALY

—Hewlett-Packard Italiana S.r.l.

JAPAN

—Hewlett-Packard Japan Ltd.

—HP Financial Services (Japan) K.K.

KOREA

—Hewlett-Packard Korea Ltd.

—HP Financial Services Company (Korea)

LATVIA

—Hewlett-Packard SIA

LITHUANIA

—UAB Hewlett-Packard

LUXEMBOURG

—Hewlett-Packard Luxembourg S.C.A.

MACAU

—Hewlett-Packard Macau Limited

MALAYSIA

—Hewlett-Packard (M) Sdn. Bhd.

MEXICO

—Hewlett-Packard Mexico S. de R.L. de C.V.

—Hewlett-Packard Operations Mexico, S. de R.L. de C.V.

MOROCCO

—Hewlett-Packard SARL

NETHERLANDS

—Hewlett-Packard Europe B.V.

—Hewlett-Packard Netherland B.V.

—Hewlett-Packard Caribe B.V.

—Hewlett-Packard Indigo B.V.

—Compaq Trademark B.V.

NEW ZEALAND

—Hewlett-Packard New Zealand

NIGERIA

—Hewlett-Packard (Nigeria) Limited

NORWAY

—Hewlett-Packard Norge A/S

PERU

—Hewlett-Packard Peru S.R.L.

PHILIPPINES

—Hewlett-Packard Philippines Corporation

POLAND

—Hewlett-Packard Polska Sp. Z.o.o.

PORTUGAL

—Hewlett-Packard Portugal Lda.

ROMANIA

—Hewlett-Packard (Romania) SRL

RUSSIA

—ZAO Hewlett-Packard AO

SERBIA

—Hewlett-Packard d.o.o.

SINGAPORE

—Hewlett-Packard Asia Pacific Pte. Ltd.

—Hewlett-Packard International Pte. Ltd.

—Hewlett-Packard Singapore (Private) Limited

—Hewlett-Packard Singapore (Sales) Pte. Ltd.

SLOVAKIA

—Hewlett-Packard Slovakia s.r.o.

SLOVENIA

—Hewlett-Packard d.o.o., druzba za tehnoloske restive

SOUTH AFRICA

—Hewlett-Packard South Africa (Proprietary) Limited

SPAIN

—Hewlett-Packard Espanola S.L.

SWEDEN

—Hewlett-Packard Sverige AB

SWITZERLAND

—Hewlett-Packard International Sàrl

—Hewlett-Packard (Schweiz) GmbH

TAIWAN

—Hewlett-Packard Taiwan Ltd.

THAILAND

—Hewlett-Packard (Thailand) Limited

TURKEY

—Hewlett-Packard Teknoloji Cozumleri Limited Sirketi

UNITED ARAB EMIRATES

—Hewlett-Packard Middle East FZ-LLC

UNITED KINGDOM

—Hewlett-Packard Limited

—Hewlett-Packard Manufacturing Ltd.

—EDS (Electronic Data Systems) Limited

UNITED STATES

—ArcSight, Inc.

—3Com International Inc.

—3Par Inc.

—Fortify International, Inc.

—Fortify Software, Inc.

—Hewlett-Packard Administrative Services LLC

—Hewlett-Packard Asia Pacific Services Corporation

—Hewlett-Packard Bermuda Enterprises, LLC

—Hewlett-Packard Brazil Holdings, LLC

—Hewlett-Packard Development Company, L.P.

—Hewlett-Packard Financial Services Company

—Hewlett-Packard Luxembourg Enterprises LLC

—Hewlett-Packard Products CV 1, LLC

—Hewlett-Packard Products CV 2, LLC

—Hewlett-Packard Software, LLC

—Hewlett-Packard State & Local Enterprise Services, Inc.

—Hewlett-Packard World Services Corporation

—Hewlett-Packard World Trade, LLC

—HP Financial Services International Holdings Company

—HPFS Global Holdings I, LLC

—Indigo America, Inc.

—Compaq Computer (Delaware) LLC

—Compaq Latin America Corporation

—Computer Insurance Company

—EDS World Corporation (Far East) LLC

—EDS World Corporation (Netherlands) LLC

—EYP Mission Critical Facilities, Inc.

—Mphasis Corporation

—NHIC, Corp.

—Palm, Inc.

—SafeGuard Services LLC

—Shoreline Investment Management Company

—Tall Tree Insurance Company

—Wendover Financial Services Corporation

—WTAF, LLC

VENEZUELA

—Hewlett-Packard Venezuela, S.R.L.

VIETNAM

—Hewlett-Packard Vietnam Ltd.

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Exhibit 21