J. P. (Jeja-Pekka) Roos (born April 30, 1945, in Helsinki) is a Finnish sociologist and former President of the European Sociological Association.
In 2006 he started a Finnish project (with European comparative data) about the interactions between the baby boomer generation with both its parents and children.
He has also become interested in theory of evolution and evolutionary sociology, and has been President of the Darwin Society in Finland.
He is also known as a supporter and defender of Tatu Vanhanen and Richard Lynn's controversial research on race and IQ.
He has translated and introduced Pierre Bourdieu's Questions de sociologie, into Finnish.