Claes Fahlander (born 21 January 1948 in Gothenburg) is a Swedish physicist.
After having graduated from Gävle in 1967, he joined Uppsala University, where he obtained his bachelor's degree in mathematics and physics in 1972.
From 1995 to 1997 he did a sabbatical as a researcher at the Laboratori Nazionali di Legnaro in Italy,[1] and on 1 July 1996 he succeeded Hans Ryde as professor of Cosmic and Subatomic Physics at Department of Physics at Lund University.
[2] Fahlanders has mainly concerned his research with studies of the shape of the atomic nucleus, its core patterns and electromagnetic properties, as well as forces between protons and neutrons in nuclear nuclei.
[4] Fahlander was elected as a member of the Royal Physiographic Society in Lund in 1998 and as a member of the Royal Swedish Academy of Sciences in 2006.