PowerBook为一系列的麦金塔（Macintosh）笔记本型电脑，由苹果电脑设计及制造，并于1991年至2006年其间发售。PowerBook 曾经历过数次主要修改与及重新设计，有很多特色都领先同行，后来成为其他笔记本电脑的标准配备。

PowerBook 的目标顾客为专业市场，并曾获得相当数量的奖项，例如2001年的工业设计优异奖 - 金奖（Industrial Design Awards - "Gold" Status），与及著名科技网站Engadget的2005年年度笔记本电脑（Laptop of the Year）。 在进入笔记本时代的PowerBook 以前，苹果电脑的手提电脑产品为手提麦金塔（Macintosh Portable）。那个时候有一些由第三方生产的手提电脑都能运行麦金塔的软件，例如 "Outbound Laptop"。于1999年，针对一般消费市场苹果亦推出了本系列的姊妹型电脑 iBook 系列。

The PowerBook (known as Macintosh PowerBook before 1997) is a line of Macintosh laptop computers that was designed, manufactured and sold by Apple Computer, Inc. from 1991 to 2006. During its lifetime, the PowerBook went through several major revisions and redesigns, often being the first to incorporate features that would later become standard in competing laptops. The PowerBook line was targeted at the professional market, and received numerous awards, especially in the second half of its life, such as the 2001 Industrial Design Excellence Awards "Gold" status, and Engadget's 2005 "Laptop of the Year". In 1999, the line was supplemented by the consumer iBook range. The PowerBook and iBook lines were discontinued and replaced by the MacBook Pro and MacBook families respectively by 2006.