This master's thesis explores the complex world of theater through the lens of semiotics, focusing on its role in various theaterological directions. The thesis examines how semiotics enriches and reshapes the understanding of theater as an art form. Theater, as a semiotic system, utilizes various types of signs, such as iconic, indexical, and symbolic signs, to convey meaning and emotions to the audience. Semiotics provides a deeper understanding of how these signs are used and interpreted in theater and how meaning is created through the interaction between performers and the audience. The thesis also analyzes the role of semiotics in different theaterological directions. Dramaturgy focuses on the analysis of dramatic texts and how signs within them communicate with the audience. Performance studies explore how signs manifest during a performance, while the sociology of theater provides the context in which semiotics in theater manifests. Feminist theater theories investigate the representation of women in theater through semiotic analysis. The thesis concludes that semiotics in theater plays a crucial role in the analysis and understanding of signs and symbols in theatrical performances, opening the door to a deeper and richer understanding of theater as a complex art form. Despite challenges and limitations, semiotics in theater remains an important interdisciplinary field that enriches theater studies and contributes to the understanding of the theater arts.