Autumn \a(u)-tu-mn\ as a girl's name is pronounced AW-tum. It is of English origin, and the meaning of Autumn is "season of harvest". The fall season. See also related season names Akiko, Theresa and Thu.
For more information, see also the related name Winter.
Baby names that sound like Autumn are Adamina, Ademina and Adamine. Other similar baby names are Audan and Auburn.