Ziemer is a surname. Notable people with the surname include:
Arthur C. Ziemer (1848–1913), American Christian Science healer Andrew Ziemer (born 1967), American soccer player Ernst Ziemer (1911–1986), German soldier Gregor Ziemer (1899–1982), American educator James L. Ziemer (born 1951), American businessman Marcel Ziemer (born 1985), German footballer R. Timothy Ziemer, American expert in disaster response and health threats