This research was conducted to study the semiotic relationship between historical men's costumes in modern times from the 17<sup>th</sup> to the 19<sup>th</sup> century and some functional (the intended function of the costume) and aesthetic (the art of fashion design) values. From a semiotic perspective, the research sample was determined by studying and analyzing four men's costumes in each of the three centuries. It was divided into four periods from the beginning to the 1920s, from the 1920s to the 1950s, from the 1950s to the 1970s, and from the 1970s to the end of the century. The research relied on the historical-analytical approach in addressing concepts related to the semiotics of historical men's fashion. This research aimed to: Describe and analyze men's fashion in modern eras from the 17<sup>th</sup> to the 19<sup>th</sup> century, clarify the symbolic significance of the form of men's fashion clothing in modern eras and its relationship to the functional values represented by the intentional function of the costume from a semiotic perspective and explain the symbolic significance of the form of men's fashion in modern eras and its relationship to the aesthetic values represented in the art of fashion design from a semiotic perspective. The results of the study were the following: The clarity of the symbolic significance of the form of men's fashion clothing and its relationship to the functional values represented in the intentional function of the costume, the aesthetic values defined in the art of fashion design from a semiotic perspective, and the reflection of historical, social, political and religious events, customs and traditions semiotically on the function of men's fashion and the art of its design.