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V3 or V03 may refer to:

Medicine[edit]

• Mandibular nerve, (V₃),division of the trigeminal nerve
• ATC code V03, a subgroup of the Anatomical Therapeutic Chemical Classification System
• Area V3 of the visual cortex
• V₃, one of six precordial leads in electrocardiography

Technology[edit]

安博士（韓語： 안랩 ，英語： AhnLab, Inc. ），原名称安哲秀研究所（韓語： 안철수연구소 ）是一家位于韩国的网络安全服务供应商，于1995年成立。2009年的营收额约695亿韩元，在韩国信息安全业排名第一位。. Ahnlab V3 Internet Security 9 0 free download - Comodo Internet Security, AVG Internet Security, Avast Internet Security, and many more programs.

• V3 Gaming PC, an American manufacturer of custom-built personal computers
• V3 engine, a combustion engine configuration
• Motorola RAZR V3, a series of mobile phones
• V3 Supercharger, third generation 250 kW battery charger for Tesla electric cars
• Z3, where it is previously known as V3

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Other[edit]

• V-3 cannon, a large-calibre German World War II gun
• LNER Class V1/V3, a British class of steam locomotive
• Belize's International Telecommunications Union callsign prefix
• Carpatair's IATA code
• Past participle form (V₃) of an English verb
• V3, or v3.co.uk, a British technology news website published by Incisive Media
• V3 (music group), an urban contemporary gospel group from the United States

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