软碟控制器（英语：Floppy Disk Controller，简称：FDC），是一个特殊功能的芯片，由控制读取与写入电脑软式磁盘机相关磁盘控制器电路所组成。在1980年代到1990年代，软碟控制器普遍使用于个人电脑或与IBM PC兼容的机型上，如NEC μPD765、Intel 82072A或是82072A及其后继芯片型号。而在除上所列外其他的软碟控制器，可能存在结构上有着与之不同的观念或实作方式。

A floppy-disk controller (FDC) is a special-purpose chip and associated disk controller circuitry that directs and controls reading from and writing to a computer's floppy disk drive (FDD). This article contains concepts common to FDCs based on the NEC µPD765 and Intel 8272A or 82072A and their descendants, as used in the IBM PC and compatibles from the 1980s and 1990s. The concepts may or may not be applicable to, or illustrative of, other controllers or architectures.