偏置（英语：biasing）, 在电子学上是指在电子电路上的多个点中，通过创建预定电压和/或电流从而设置某个适当的工作点的方法。

一个设备的工作点，称为偏压点、静态工作点，简称静点，或Q点（quiescent point）。它是在无输入信号条件下（直流工作状态下），在输出特性曲线（通常显示集电极-发射极间电压（VCE）、基极电流（IB）和集电极电流（IC）三者关系）上的一个点。这个术语通常应用于诸如晶体管放大电路的设计与连接调试过程中。静态直流通路下如果工作点设置不合理，晶体管就可能工作在截止区或者是饱和区，或会在有信号时进入其他工作区中，从而在对交流信号放大时出现输出失真。

Biasing in electronics is the method of establishing predetermined voltages or currents at various points of an electronic circuit for the purpose of establishing proper operating conditions in electronic components. Many electronic devices such as transistors and vacuum tubes, whose function is processing time-varying (AC) signals also require a steady (DC) current or voltage to operate correctly — a bias. The AC signal applied to them is superimposed on this DC bias current or voltage. The operating point of a device, also known as bias point, quiescent point, or Q-point, is the steady-state (DC) voltage or current at a specified terminal of an active device (a transistor or vacuum tube) with no input signal applied. A bias circuit is a portion of the device's circuit which supplies this steady current or voltage.