Gustav Karlsson (1909–1995) was a Swedish classicist and Byzantinologist who donated his library to the Institute.
Held since 2009, the Gustav Karlsson lectures are organized biannually in order to enhance the status of Byzantinology as an academic topic in Sweden.
The first lecture in the series was given by Ingela Nilsson, Professor at the Department of Linguistics and Philology at Uppsala University in 2009. This was followed by a lecture in 2011 by David Westberg, and in 2013 by Adam Goldwyn, also from the Department of Linguistics and Philology at Uppsala University.
The next lecture in the series will be given in January 2016 by Arja Karivieri, Professor in Classical Archaeology and Ancient History at Stockholm University.