Charlene Moore, 34, and her daughter Candice, 14, had been living in Brighton but were last seen in Burgess Hill on 6 October.
Charlene is white, 5’2″ , with short black hair, and of slim build. Candice is also white, 5’4″ with shoulder length currently black hair.
While there are currently no suspicious circumstances surrounding their disappearance, concern is growing as they have still not been traced.
Anyone who has seen Charlene or her daughter, or who has any other information on their whereabouts, is asked to contact Sussex Police on 101 or 999, quoting serial 1466 of 09/10.