Greenhorn is a slang for an inexperienced person, or a slur against Portuguese people in New England, United States. It may also refer to:

Places

Greenhorn, California Greenhorn is a census-designated place (CDP) in Plumas County, California, United States. The population was 236 at the 2010 census, up from 146 at the 2000 census. Geography Greenhorn is located at (39.905794, -120.748665). According to the Uni ...

, United States *

Greenhorn Mountain Greenhorn Mountain is the highest summit of the Wet Mountains range in the Rocky Mountains of North America. The prominent peak is located in the Greenhorn Mountain Wilderness of San Isabel National Forest, southwest by west ( bearing 238°) ...

, a mountain in Colorado *

Greenhorn, Oregon Greenhorn is a non-populated city in Baker and Grant counties in the U.S. state of Oregon. It straddles the Blue Mountain ridge, so that it is located in both Grant County and Baker County. As most of the city is situated in Baker County, and the ...

, United States

Other

The Greenhornes The Greenhornes were an American garage rock band from Cincinnati, Ohio, formed in 1996 by vocalist/guitarist Craig Fox, bass guitarist Jack Lawrence and drummer Patrick Keeler. They released their debut album '' Gun For You'' in 1999, follow ...

, a rock band from Cincinnati, Ohio *

Greenhorn Limestone The Greenhorn Limestone or Greenhorn Formation is a geologic formation in the Great Plains Region of the United States, dating to the Cenomanian and Turonian ages of the Late Cretaceous period. The formation gives its name to the Greenhorn cycle ...

, a widespread geologic unit in the plains and mountainous Western United States {{disambiguation, geo