Baylis may refer to:
Places Baylis, Illinois, a village in Pike County, Illinois, United States Baylis House, a manor house in Slough, England Baylis Road, a road in Lambeth, London, England Baylis & Harding, the handwash company based in Redditch, England Baylis Street, one of the main shopping streets in Wagga Wagga, New South Wales, Australia Baylis Court School, a girls' school in Slough, Berkshire, England
Other uses Baylis (surname) Baylis–Hillman reaction, a reaction of an aldehyde and an α,β-unsaturated electron-withdrawing group catalyzed by DABCO (1,4-diazabicyclo[2.2.2]octane) to give an allylic alcohol Aza-Baylis–Hillman reaction, the reaction of an α,β-unsaturated carbonyl compound with an imine in the presence of a nucleophile
See also Bayless, a surname Bayliss, a surname