交互式广告（Interactive Advertising）乃于在线或者脱机情况下，利用交互式媒体来推销以及/或者影响消费者购买决策。交互式广告可利用媒体如互联网、交互式电视、手机设备(WAP、SMS以及APP)、以及摊位平台式终端达成目的。

交互式广告让行销商有能力负得起以直接以及个人的方式吸引消费者，并让彼此间复杂并有维度的对话变为可能。这将影响潜在顾客的购买决策，特别是在电子商务的环境。

或许交互式广告最有效的实践是所谓病毒营销。这种技术利用图形、文本、超链接、Flash动画、声音/视频短片等等，从用户到用户以连锁信模式透过电子邮件传布。小鸡侍者(Subservient Chicken)──汉堡王为推销该公司新的鸡肉三明治以及「随你怎么吃」(Have it your way)活动──是为交互式广告中最为人知的翘楚。

Interactive advertising uses online or offline interactive media to communicate with consumers and to promote products, brands, services, and public service announcements, corporate or political groups.

In the inaugural issue of the Journal of Interactive Advertising, editors Li and Leckenby (2000) defined interactive advertising as the "paid and unpaid presentation and promotion of products, services and ideas by an identified sponsor through mediated means involving mutual action between consumers and producers." This is most commonly performed through the internet; often through the use of an ad server that can deliver a variety of interactive advertising units.