Albert Sonnichsen (5 May 1878 — 15 August 1931) was an American journalist, author, and adventurer. Born in San Francisco, California, he led a life full of remarkable experiences. As a young man, he traveled around the world and participated in significant historical events. He served as an American soldier during the Spanish-American War and was captured and held in captivity for over ten months in the Philippines.

Sonnichsen later traveled to the Balkans and joined the Internal Macedonian Revolutionary Organization (IMRO) in their struggle against the Greeks and the Turks. He wrote several books, including "Ten Months a Captive Among Filipinos" (1901), "Deep Sea Vagabonds" (1903), and "Confessions of a Macedonian Bandit" (1909).

In addition to his adventurous life, Sonnichsen was also involved in the cooperative movement in the United States and managed his own farm in Connecticut.

Books

• Confessions of a Macedonian Bandit (1906)
• The Turbulent Balkans: Events Leading Up to the Assassination of the Heir to the Austrian Throne
  Chapter VI of The Book of History: The World's Greatest War, Volume XVI (1915)