Police are concerned for the welfare of a missing 19-year-old woman who was last seen in the Bondi Junction area more than two weeks ago.

Bee Bollard, also known as Rubi, was reported missing after she failed to return home in Marrickville. She was last seen at the Bondi Junction bus interchange on Friday, 30 September about 10:30 am.

Bee Bollard was last seen at Bondi Junction two weeks ago.

Police said the 19-year-old may have been with two males aged about 16 years.

Concerns are held for Ms Bollard's welfare, as she suffers a medical condition and is without her medication.

She is described as being of Asian appearance, 150cm tall of slim build and long brown hair.

It is not known what Ms Bollard was last wearing and police said she may be frequenting the Bondi or Glebe areas.