This is a list of Maine county name etymologies.

• Androscoggin County, Maine: Androscoggin is named for the Androscoggin Native American tribe.
• Aroostook County, Maine: Aroostook is named for a Native American word meaning beautiful river.
• Cumberland County, Maine: Cumberland is named for Prince William Augustus, Duke of Cumberland, son of George II of Great Britain.
• Franklin County, Maine: Franklin is named for Benjamin Franklin, the Founding Father, scientist, printer, and diplomat.
• Hancock County, Maine: Hancock is named for John Hancock, the Founding Father and president of the convention that produced the Declaration of Independence.
• Kennebec County, Maine: Kennebec is named for the Kennebec River.
• Knox County, Maine: Knox is named for Henry Knox, the first United States Secretary of War who lived in Thomaston, Maine.
• Lincoln County, Maine: Lincoln is named for the city of Lincoln, England.
• Oxford County, Maine: Oxford is probably named for Oxford, Massachusetts.
• Penobscot County, Maine: Penobscot is named for the Penobscot Native American tribe.
• Piscataquis County, Maine: Piscataquis is named for an Abenaki word meaning rapid waters.
• Sagadahoc County, Maine: Sagadahoc is named for a Native American word meaning mouth of big river.
• Somerset County, Maine: Somerset is named for the city of Somerset in England.
• Waldo County, Maine: Waldo is named for Samuel Waldo, a colonial soldier in the siege of Louisberg in 1745.
• Washington County, Maine: Washington is named for George Washington, the first president of the United States.
• York County, Maine: York was named for King James II of England, earlier Duke of York.

See also

• Maine
• List of Maine counties
• County (United States)
• Lists of U.S. county name etymologies