Peter Jagers (born 1941) is a Professor Emeritus of Mathematical Statistics at University of Gothenburg and Chalmers University of Technology who made lasting contributions in probability and general branching processes.

[5] He also served as a member of the Scientific Advisory Board of Statistics Sweden.

He is on the Editorial Committee for Springer's books on probability theory[7] and was editor of Stochastic Processes and their Applications 1989–1993.

[2] Jagers received an honorary doctorate from the Bulgarian Academy of Sciences[2] and in 2012 was awarded the Carver Medal by the Institute of Mathematical Statistics.

[10] He has published a large number of scientific works, notably in branching process theory and its applications, and is the author of two books, Branching Processes with Biological Applications (J. Wiley 1975) and Branching Processes: Variation, Growth, and Extinction of Populations (Cambridge U.