- Mar 7 Emily Pauline Johnson [Tekahionwake], Native Canadian poet, dies of cancer at 51
- Mar 9 Eberhard Nestle, German biblical scholar, dies at 61
Harriet Tubman
Mar 10 Harriet Tubman [Araminta Ross], American abolitionist, former slave and humanitarian (Underground Railroad), dies at about 91
Harriet Tubman
- Mar 11 John Shaw Billings, American librarian & surgeon, dies at 74
- Mar 17 Richard Montgomery Gano, American Brigadier General (Confederate Army), dies at 82
- Mar 18 George I, king of Greece (1861-1913), assassinated by Schinas at 67
- Mar 22 Song Jiaoran, Chinese Nationalist and revolutionary (Leader of Kuomintang party 1912-13), assassinated at 30
J. P. Morgan
Mar 31 J. P. Morgan, Sr. [John Pierpont], American financier and banker (General Electric, US Steel Corporation, AT&T), dies in his sleep at 75
J. P. Morgan