The "Virtual Workshop on Combinatorial Species, Operads, Riordan arrays and Related topics" will be held online on Zoom, February 22–24, 2022. It is hosted by the Applied Algebra and Optimization Research Center (AORC) at Sungkyunkwan University in Korea, This workshop will be focused on fundamental notions of combinatorial species, operads, and monops. Furthermore, we will discuss new research directions for these subjects in connection with (enumerative) combinatorics or Riordan arrays and related topics. Here is a website for the workshop: https://sites.google.com/view/2022-csor/home Please forward this e-mail to anyone who may be interested, and also encourage them to register to the workshop website. Invited speakers Paul Barry, Waterford Institute of Technology, Ireland Samuele Giraudo, Université Gustave Eiffel, France Sergey Kitaev, University of Strathclyde, United Kingdom Miguel Méndez, Universidad Antonio Nariño, Colombia Emanuele Munarini, Politecnico di Milano, Italy Arnauld Mwafise, AORC, Sungkyunkwan University, Korea