The ThinkPad P series line of workstation laptops produced by Lenovo and was introduced by the company as a successor to the previous ThinkPad W series. With 15.6" and 17.3" screens, the ThinkPad P series saw the reintroduction of physically large laptops into the ThinkPad line. Marketed largely as portable workstations, many P series laptops can be configured with high-end mobile workstation-class Intel processors as well as error correction code (ECC) memory and a discrete Nvidia Quadro GPU. The P series offers independent software vendor (ISV) certifications from software vendors such as Adobe and Autodesk for various computer-aided design (CAD) software. The P52 and P72 models are the last current Lenovo laptops with a dedicated magnesium structural frame.

The ThinkPad X1 series is a line of high-end ThinkPad laptops and tablets produced by Lenovo.