This special issue presents recent advances on interfacial fluid dynamics, in link with the 11th conference of the International Marangoni Association organized in Bordeaux, France, on June 2023.The International Marangoni Association (IMA) conferences are devoted to problems related to interfacial fluid mechanics and transport phenomena. Although the Marangoni effect represents the major aspect of the conference, all interfacial-related transport is covered. The 11th edition of this conference series was organized in Bordeaux, France, on June 19-22, 2023. The IMA11 conference was chaired by S. Amiroudine (I2M, University of Bordeaux) and co-chaired by T. Bickel (LOMA, University of Bordeaux).Topics are of fundamental aspect and include bubbles/drops flows, hydrodynamic instabilities, hydraulic jump, wave breaking, electrokinetic instabilities, contact line dynamics, evaporation process, solute transport, Maxwell fluid, Marangoni wave pattern with surfactants and some other processes.These fundamental studies find industrial applications in the fields of foams, materials processing, desalination processes, oil recovery, environmental problems, separation technology, space processing, corrosion erosion and biomedical transport in the human airways or contact lenses, to name only a few examples.This special issue "IMA11: Interfacial fluid dynamics" gathers recent works from this very active field of research. A brief overview of the different topics covered in this special issue are given below.