Kazimierz Bayer (1881-1939) – Polish teacher, Speaker of Bydgoszcz city council. After the German invasion of Poland in September 1939 he was arrested on personal order of Werner Kampe ¬– German new mayor of Bydgoszcz and county Nazi party leader (de: "Kreisleiter"). Kazimierz Bayer was probably murdered in the place of mass executions in Tryszczyn or in Gdański Forest near Bydgoszcz.