A surname. / A village in Coles County, Illinois, United States. / A city in Humboldt County, Iowa, United States. / A small city in Allen County, Kansas, United States.

Spheniscus humboldti, a species of penguin which live in coastal Peru and Chile.

plural of Humboldt penguin

One of 58 counties in California, United States. County seat: Eureka. Named after Humboldt Bay. / One of 99 counties in Iowa, United States. County seat: Dakota City. Named after Alexander von Humboldt.

Dosidicus gigas, a large squid living in the waters of the Humboldt Current in the eastern Pacific Ocean.

A census-designated place in Humboldt County, California, United States.

A census-designated place in Pershing County, Nevada, United States.

(mineralogy) A monoclinic-prismatic mineral containing carbon, hydrogen, iron, and oxygen.

Of or relating to Alexander von Humboldt (1769–1859), Prussian geographer, naturalist and explorer.

(mineralogy) A variety of melilite with chemical formula (Ca,Na)₂(Si,Mg,Al)₃O₇.