Kati Leinonen (b. 1974) is a Finnish artist working with various forms of photography and video. She has graduated in photography (BA) from the London College of Printing and in audiovisual media culture (MA) from the University of Lapland, where she is currently working on her art-based doctoral thesis about the 19th century wet plate collodion process as a tool for contemporary portrait. Her studies of the wet plate collodion process were conducted under France Scully-Ostermann in Rochester (USA) in 2008.