Sign Systems Studies is a peer-reviewed academic journal on semiotics edited at the Department of Semiotics of the University of Tartu and published by the University of Tartu Press. It is the oldest periodical in the field. It was initially published in Russian and since 1998 in English with Russian and Estonian language abstracts. The journal was established by Juri Lotman as Trudy po Znakovym Sistemam in 1964. Since 1998 it has been edited by Kalevi Kull, Mihhail Lotman, and Peeter Torop.