Police say Ju Zhang’s disappearance is extremely out of character.
Ms Zhang, also known as Kelly, was last seen at the home she shares with her eight-year-old son on Winchester Avenue in Epping about 5.30pm on February 1.
The 33-year-old was wearing a pink pyjama top, shorts and no shoes when she was last seen. She had no personal belongings with her other than her mobile phone, which has not been located.
She was reported missing the following evening, on February 2.
Police say anyone who sights Ju is urged to contact triple zero immediately, and anyone with other information is urged to contact Crime Stoppers on 1800 333 000.