The order Agaricales represents one of the most diverse and ecologically significant groups of Basidiomycota, yet its diversity in North Africa remains poorly documented. In Morocco, forest ecosystems dominated by Quercus suber and Cedrus atlantica constitute potential reservoirs of ectomycorrhizal and saprotrophic fungi, but comprehensive taxonomic assessments are lacking. This study aimed to evaluate the diversity of selected Agaricales families (Entolomataceae, Hygrophoraceae, and Inocybaceae) across contrasting Mediterranean forest ecosystems, including Maâmora, the Oulmès plateau, the Rif, and the Middle Atlas. Specimens were subjected to detailed macro- and micromorphological analyses. Ten species were identified, including three taxa newly recorded for the Moroccan fungal flora: Hygrocybe fornicata (including a white morphotype) and Hygrophorus agathosmus. Additional regional first records included Hygrocybe reae, Hygrophorus cossus, Inocybe lacera, and Inocybe geophylla var. lilacina. The documented diversity of Agaricales in Morocco increased by three species newly recorded for the national fungal flora, together with several regional first record. The surveyed Mediterranean forests dominated by cork oak (Quercus suber) and Atlas cedar (Cedrus atlantica) yielded multiple taxa of Entolomataceae, Hygrophoraceae, and Inocybaceae.