诺顿防病毒（Norton AntiVirus，NAV）是赛门铁克公司个人信息安全产品之一，亦是一个广泛被应用的反病毒进程。该项产品发展至今，除了原有的杀毒外，还有防间谍等网络安全风险的功能。

诺顿杀毒除了是一个独立销售的产品外，亦是诺顿网络安全大师（Norton Internet Security）和诺顿电脑大师（Norton SystemWorks）的一部份。赛门铁克另外还有一种专供企业使用的版本被称做Symantec Endpoint Protection。

Norton AntiVirus, developed and distributed by Symantec Corporation, was providing malware prevention and removal during a subscription period. It used signatures and heuristics to identify viruses. Other features included in it were e-mail spam filtering and phishing protection.