The IBM PS/2 Note and PS/note are a series of notebooks from the PS/2 line by IBM. It was announced in March 1992, half a year prior to the release of the first ThinkPad, the IBM ThinkPad 700. The series was discontinued in 1994.

ThinkPad is a line of business-oriented laptop computers and tablets, the early models of which were designed, developed and marketed by International Business Machines (IBM) starting in 1992. IBM sold its PC business, including laptops to Lenovo in 2005, and since 2007, all new ThinkPad models have been branded Lenovo instead. The Chinese manufacturer further developed the line, and is still selling new models in 2024.