Cyn may refer to:

• Cynthia Nabozny, a singer and songwriter who goes by "Cyn"
• Cynthia Payne, an English brothel keeper known as Madam Cyn
• Cyn Santana, a Love & Hip Hop: New York cast member
• Cyn, a character from the animated YouTube web series Murder Drones
• Cyclic neutropenia, a hematologic disorder abbreviated as CyN
• Cylindrospermopsin, a cyanotoxin abbreviated as CYN
• cyn-, a taxonomic affix meaning dog
• Cyn.in, an enterprise collaborative software
• Christian Youth for the Nation, the youth ministry of Jesus Is Lord Church Worldwide
• Zhongyuan Airlines, a former Chinese airline with ICAO code CYN

This disambiguation page lists articles associated with the title Cyn.
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