Art Nouveau style, which became famous towards the end of the 19th century aimed to unite arts and crafts and promote hand production. This style with its totally original stylization is common in many fields like architecture, furniture, jewelry, graphic arts. With this trend, the poster has begun to be accepted as an artwork, and as Mucha's stunning poster designs show up in the streets (as they emerge), Mucha has begun a period in which his reputation will last for centuries.In this study; the relationship between the typographic and visual elements of Mucha's poster designs is examined in terms of basic design principles. In addition, Art Nouveau current, typography and basic design principles are evaluated in detail. In between many posters of the artist the ones are chosen designed for the theatres Sarah Bernhard take role, and analyzed according to the basic design principles and typography. In this research, which analyzed the harmony between typographic and visual elements according to basic design principles descriptive method used. It is found out that maximum harmony between the typographic and visual elements there is on Mucha’s posters according to principles of design and form reflects the content.
Keywords:. Alphonse Mucha, Poster, Typography, Principles of Design, Lithography