- Mar 5 Marie-Alexis Castillon de Saint-Victor, composer, dies at 34
- Mar 20 Adolfe Louis Eugene Fetis, composer, dies at 52
- Mar 25 Wilhelm Marstrand, Danish painter (b. 1810)
- Mar 27 Amedée Simon Dominique Thierry, French journalist and historian (b. 1797)
- Mar 29 Francesco Zantedeschi, Italian physicist (b. 1797)
- Mar 30 Benedict Augustin Morel, Austrian-French psychologist (dementia praecox), dies at 63