Iceweasel是一个网络浏览器，是Mozilla Firefox浏览器在Debian上的再发布版。

Debian从4.0（Etch）版本开始默认安装Iceweasel，代替Firefox。创建此再发布版的起因是Mozilla组织注册了“Firefox”商标并增加了多项品牌使用限制。Debian组织最终选择了放弃使用Firefox商标，另行创建一个用于Debian发行版的“Iceweasel”标识并进行维护。

In 2006, a branding issue developed when Mike Connor, representing the Mozilla Corporation, requested that the Debian Project comply with Mozilla standards for use of the Thunderbird trademark when redistributing the Thunderbird software. At issue were modifications not approved by the Mozilla Foundation, when the name for the software remained the same.