Margherita Arlina Hamm (1867-1907) was a journalist and author from the United States. She was among the earliest women to cover a war from the front lines. She was also a prolific author of popular books, especially relating to travel and famous people. Hamm was both an active suffragette, and a supporter and defender of American overseas imperialism/colonialism at the time of the Spanish-American War, which she covered.