This Man is a person who has allegedly appeared in thousands of people's dreams since 2006, but has never been identified in the real world. He was the main focus of a website called Ever Dream This Man?, created by Italian sociologist and marketer Andrea Natella in 2008. 

Natella explained that "This Man" was a guerrilla marketing campaign by Natella's advertising agency and was created to explore the power of the internet to create and spread urban legends and collective myths.