She is a Fellow of IEEE, a Fellow of the International Association for Pattern Recognition (IAPR), a Fellow of the Eurographics Association, a Pioneer of the Solid Modeling Association and an inducted member of the IEEE Visualization Academy. She is a recipient of the IEEE Computer Society Golden Core award and she is an inducted member of the IEEE Honor Society IEEE Eta Kappa Nu.
De Floriani was the 2020 President of the IEEE Computer Society. She is the IEEE Division VIII Director for 2023-24, and a member of the IEEE Board of Directors and of the IEEE Assembly. She is the founding Chair of the IEEE Computer Society Diversity and Inclusion Committee. Among the other involvements, she has been a member of the IEEE Conferences Committee (2021-23), and of the IEEE Publication Services and Products Board (2023). She also has been a member of the Computing Research Association (CRA) Board in 2020-23. She is currently a member of the Scientific Council of the Italian Scientists and Scholars in North America Foundation (ISSNAF).