白板是一种能够以专用的白板笔反复书写并可擦拭的塑胶或钢化玻璃制白色平面，常用于课堂教学、会议讨论、与个人记事等用途。自1994年左右起，白板才开始被普遍使用，在这之前几乎只有黑板较为普遍。

在台湾， 因为与毒品的俗名相同之故，因此又常以「非黑板」代称之。

如同必须使用粉笔在黑板上书写，在白板上书写必须使用白板笔。

白板通常较黑板昂贵，然而比起在黑板上以粉笔书写之后留下的粉笔灰，白板比黑板容易擦拭，擦拭时也不会扬起粉粒，另外写在板上的图或字对比度相对较高，这些都是白板的优点。白板因为较容易反光，离白板远的人看得比较不清楚，因此学校大多数使用黑板。

A whiteboard (also known by the terms markerboard, dry-erase board, dry-wipe board, pen-board, and the misnomer greaseboard) is any glossy, usually white surface for nonpermanent markings. Whiteboards are analogous to blackboards, but with a smoother surface allowing rapid marking and erasing of markings on their surface. The popularity of whiteboards increased rapidly in the mid-1990s and they have become a fixture in many offices, meeting rooms, school classrooms, and other work environments.