肯辛顿锁孔或肯辛顿锁（英文：Kensington Security Slot，简称K-Slot 或 Kensington lock）是一个可于绝大部份便携或小型电脑产品上找到的小孔，通常可见于笔记本电脑、液晶显示器、视频投影机等产品，这锁孔是用作扣上电脑钢缆锁而设，而Kensington Computer Products Group正是这类电脑锁的始创者。

这类电脑锁主要分为锁匙锁及密码锁，锁头会连上一条包上塑料的钢缆，而钢缆的末端会有一个小圈（见下图）。上锁的方法为先把钢缆绕着一件不容易移动的对象（如书桌、窗台等等），再把锁头扣上电脑产品的锁孔即成。

A Kensington Security Slot (also called a K-Slot or Kensington lock) is part of an anti-theft system designed and patented by Kryptonite in 1999-2000, assigned to Schlage in 2002, and since 2005 owned and marketed by Kensington Computer Products Group, a division of ACCO Brands.