Agrochemicals used in agriculture are obtained from chemical synthesis processes, which adversely affect soil quality, cause damage to crops, and generate resistance in pests. The need to meet the demand for food production has led to an excessive increase in the use of these agrochemicals. As a result, the agricultural sector faces the challenge of guaranteeing the quality of agricultural products and preserving natural resources. In this context, the search for organic alternatives for food production emerges as an option to change the paradigm towards sustainable agriculture, in which priority is given to using products of biological origin capable of maintaining the production and quality of agricultural products, thus replacing current synthetic technologies. The study of microorganisms in agriculture has allowed them to be used in fermentative processes to obtain products relevant to the agronomic industry. These products are classified as biofertilizers, bioherbicides, and biostimulants, also known as phytohormones (PH). PH plays a crucial role in regulating internal plant processes in the face of biotic and abiotic factors. Thanks to the study of their properties, the potential of phytohormones to contribute to sustainable and organic agriculture has been established. This review article focuses on compiling the existing and updated knowledge on using phytohormones of microbial origin in organic agriculture.