Marthy \m(a)-rthy, mar-thy\ as a girl's name is a variant of Martha (Aramaic), and the meaning of Marthy is "lady; mistress of the house".

The baby name Marthy sounds like Marty, Marthe and Marth. Other similar baby names are Bartha, Dorthy, Eartha, Marah, Marcy, Martia, Marsha, Marsey, Marcey, Marjey, Margy, Margey, Marjy, Marley, Marney, Mirtha, Matha, Martta, Martie, Marti, Marte, Marta, Mart and Mary.