Michael Menaker (born May 19, 1934), is an American chronobiology researcher, currently serving Commonwealth Professor of Biology at University of Virginia.
His research focuses on circadian rhythmicity of vertebrates, including contributing to an understanding of light input pathways on extra-retinal photoreceptors of non-mammalian vertebrates, discovering a mammalian mutation for circadian rhythmicity (tau mutation in golden hamsters), and locating a circadian oscillator in the pineal gland of bird.
He has written almost 200 scientific publications.