Police are appealing for urgent assistance to locate a woman and her two-year-old daughter after they haven't been in contact since yesterday.

Brogan Almat, 29, and her two-year-old daughter were last seen on Bell Street in Browns Plains leaving Ipswich train station at around 1.30pm on Friday.

Police believe the pair were possibly in company of a man and another woman.

Family are concerned for their safety and wellbeing, as Ms Almat had not been in contact.

A police spokesman said the actions of Ms Almat was "out of character".

Ms Almat is described as Aboriginal, about 160cm tall with black hair.

Her two-year-old daughter is described as Aboriginal with curly brown hair.

Anyone who has information about where they both are, is urged to immediately call triple-0.

Originally published as 'Out of character': Mum, two-year-old missing