Janusz Kazimierz Rybakowski (born 8 January 1946) is a psychiatrist, professor at the Poznaà  University of Medical Sciences.
The grandson of , he obtained his medical degree at the Poznaà  Medical Academy (currently the Poznaà  University of Medical Sciences) in 1969 and at this university he obtained subsequent academic degrees and academic promotions (doctorate in 1973, habilitation in 1980).
In 1976âÂÂ1977 he was a fellow of the US National Institutes of Health at the Department of Psychiatry at the University of Pennsylvania in Philadelphia. In the years 1985âÂÂ1995 he was the head of the Department and Clinic of Psychiatry at the Medical University of Bydgoszcz. In the years 1998âÂÂ2001 he was the president of the Polish Psychiatric Association. He became the chairman of the Program Council of the journal âÂÂPsychiatria Polskaâ and the editor-in-chief of journals âÂÂFarmakoterapia w Psychiatrii i Neurologiiâ and âÂÂNeuropsychiatria i NeuropsychologiaâÂÂ, as well as a member of the Committee of Neurobiology and the Committee on Neurological Sciences of the Polish Academy of Sciences.
In 2022 he became a member of the Polish Academy of Sciences, as the first psychiatrist in the history of the Polish Academy of Sciences to become its member. He supervised 40 doctoral theses.
He was a member of the Polish United Workers' Party until the end of its existence. His son is a psychiatrist.