In this article, we identified, defined, classified, and exemplified the discourse genres that have emerged from the 933 texts forming the PUCV-2006 Academic and Professional Corpus of Spanish. To accomplish these objectives, we adopt a deductive-inductive complementary methodology. Five criteria were selected and employed in order to classify the texts: Communicative Macro-purpose, Relation between the Participants, Mode of Discourse Organization, Modality, and Ideal Context of Circulation. Based on the corpus analysis, we identify twenty-eight genres according to the criteria mentioned above. Among our findings, we can say that most identified genres share consigning information, as their communicative purpose. Also, that they are predominantly organized in a descriptive mode. And, that the relation between participants is established between experts.