Baylis may refer to:

• 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

• 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

• Bayless, a surname
• Bayliss, a surname

This disambiguation page lists articles associated with the title Baylis.
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