Mary Alexander (disambiguation)

Mary Alexander (1693–1760) was an American merchant.

Mary Alexander may also refer to:

• Mary Alexander Cook (1902–1981), English expert on Cape Dutch architecture, and museum curator
• Mary Alexander Park (1850–1920), Scottish-born New Zealand artist
• Mary Alexander Yard, real name of Molly Yard (1912–2005), American feminist and social activist
• Mary C. Alexander (1893–1955), American aviation pioneer