Tailed sulphur may refer to:

• Dercas verhuelli, a butterfly endemic to Indochina
• Phoebis neocypris, a butterfly found in Central and South America

• Infrared remote sensing
• Infrared Riding Hood
• Infrared scope
• Infrared search and track
• Infrared sensing in snakes
• Infrared signature
• Infrared solar cell
• Infrared Soldering
• Infrared soldering
• Infrared Space Systems Directorate
• Infrared Spectrometer
• Infrared spectrophotometry
• Infrared Telescope in Space
• Infrared telescopes
• Infrared thermography
• Infrared vision
• Infrasonic Sound
• Infrasonic sound
• Infraspecific taxa
• Infraspinatous fascia
• Infrasternal angle
• Infra structure
• Infrastructure as a Service
• Infrastructure Asset Management
• Infrastructure asset management