Koester is the surname of:
Bev Koester (1926-1998), Canadian naval officer and civil servant
Bob Koester (born 1932), American music producer
Charles Roman Koester (1915-1997), American Catholic bishop
Hans von Koester (1844-1928), German admiral
Helmut Koester (born 1926), German-American theologian
Jolene Koester, President of California State University, Northridge
