电子滤波器（英语：electronic filters）可执行信号处理功能的电子线路组件或设备，它专门用于去除信号中不想要的成分或者增强所需成分。

电子滤波器有音频滤波器（wave filter）与杂讯滤波器（noise filter）等应用设备，可以是：

不管它们的设计有什幺不同，最常见的电子滤波器类型是线性滤波器。参见线性滤波器方面的文章中关于它们的设计和分析的详细内容。

Electronic filters are circuits which perform signal processing functions, specifically to remove unwanted frequency components from the signal, to enhance wanted ones, or both. Electronic filters can be:

The most common types of electronic filters are linear filters, regardless of other aspects of their design. See the article on linear filters for details on their design and analysis.