Oncken

Oncken is a surname. Notable people with the surname include:


 * Arthur Oncken Lovejoy, a German-born American philosopher
 * August Oncken (1844–1911), a German economist (German article)
 * Hermann Oncken (1867–1945), a German historian
 * Johann Gerhard Oncken (1800–1884), a pioneer German Baptist preacher
 * Wilhelm Oncken (1835–1905), a German historian