Abby May may refer to either of two nineteenth-century American feminists.
Abigail (Abba) Alcott (née May) (1800–1877): suffragist and abolitionist, mother of Louisa May Alcott Abigail (Abby) Williams May (1829–1888): political and social activist, first cousin of Louisa May Alcott
See also Abbe May (born 1983), Australian singer-songwriter, musician and human rights campaigner Abby-Mae Parkinson (born 1997), English racing cyclist Abby May Erceg (born 1989), New Zealand footballer