感受器（Sensory receptor）也译作感觉接受器，是机体感受刺激的装置。

• 感受器的功能是接受肌体内外环境的各种不同刺激，将其转变为神经冲动或神经兴奋，并由神经系统作用，产生感觉；再由神经系统作用将神经冲动传至效应器，对刺激做出反应。

In a sensory system, a sensory receptor is a sensory nerve ending that responds to a stimulus in the internal or external environment of an organism. In response to stimuli, the sensory receptor initiates sensory transduction by creating graded potentials or action potentials in the same cell or in an adjacent one.