Since 2007, the International Society of Management Science and Engineering Management (ISMSEM) has organized the International Conference of Management Science and Engineering Management (ICMSEM). Ingenium Research group has participated in several ICMSEM conferences around the world, sharing the research advances and novel experiences in management science. Ingenium has been awarded for different research papers due to this research work. Ingenium Research Group together with the ISMSEM and the collaboration of the University of Castilla-La Mancha, will organize the Fifteenth ICMSEM Conference at 1st-4th August 2021. Toledo (Spain), with the title of UNESCO world heritage, is the city chosen for this international event. This city is full of history, monuments and gastronomy, is a symbol of union between different cultures. This conference attends a forum for presenting current research with technical sessions and round table discussions during the conference period. Thanks to an agreement with Springer, the accepted papers of the Fifteenth ICMSEM conference have been gathered in proceedings and published on Springer. This conference is an excellent opportunity to present current research in engineering management and renewable energies, among others, in a nice relaxing enjoyable atmosphere. For more information, click the link: https://ingenium.uclm.es/index.php/icmsem2021/ Important dates Abstract Submission Deadline: November 20, 2020 Papers submission deadline: December 20, 2020 Acceptance Notification deadline: March 20, 2021 Early Registration deadline: April 20, 2021