The purpose of this chapter is to introduce the new concept of artificial knowledge. Although it looks like a strange concept, it complements perfectly the concept of artificial intelligence that dominates today almost all domains of our life. Both concepts belong to the science of the artificial, imitating human knowledge and intelligence in their functionalities. Human knowledge is created through learning from direct experience or conceptual work. In the first case, we discuss tacit knowledge, while in the second one, it is about explicit knowledge. Tacit knowledge is wordless and expresses human emotions, feelings, intuitions, and values as a reaction of the human body to external forces. Explicit knowledge uses natural or symbolic language to frame concepts and ideas and constitutes the main communication tool. Tacit knowledge can be transformed into explicit knowledge through our intelligence. Therefore, explicit knowledge is a result of processing data, information, and other input knowledge. By analogy, artificial knowledge is a result of processing data, information, and other input knowledge by artificial intelligence. It cannot be tacit. It is expressed only explicitly by using natural and symbolic language.