Mary Emma may refer to:

• Mary Emma Allison (1917–2010), American school librarian
• Mary Emma Ebsworth (1794–1881), English dramatist
• Mary Emma Holmes (1839–1937), American reformer, suffragist, and educator
• Mary Emma Macintosh (?–c. 1916), South African suffragist
• Mary Emma Thames (?–1944), American murder victim
• Mary Emma Woolley (1863–1947), American educator, peace activist, and women's suffrage supporter

This disambiguation page lists articles associated with the title Mary Emma.
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