Delannoit may refer to:

• Cyrille Delannoit (1926-1998) (also written Cyriel Delannoit), Belgian boxer
• Dean Delannoit (born 1989), Belgian singer, winner of Idool 2007, member of Belgian Flemish boyband 3M8S

• Synthetic-analytic distinction
• Synthetic Aperture
• Synthetic Aperture Magnetometry
• Synthetic-aperture magnetometry
• Synthetic array heterodyne detection
• Synthetic biodegradable polymer
• Synthetic Biodegradable Polymers
• Synthetic biodegradation of polymers
• Synthetic Biodegradation of Polymers
• Synthetic bond
• Synthetic cannabinoid
• Synthetic cannabinoids
• Synthetic CDO
• Synthetic chords
• Synthetic claim
• Synthetic cloth
• Synthetic Communications
• Synthetic crude oil
• Synthetic data
• Synthetic datum
• Synthetic detergent
• Synthetic diesel
• Synthetic (disambiguation)
• Synthetic dreads
• Synthetic environment