Sebjana Myzeqari, aged 24 and her daughter Enissa Myzeqari, who is two, were reported missing on Wednesday, May 1 but they have not been seen since Tuesday, April 2, when they left a medical centre on St Sepulchre Gate, Doncaster.
They crossed Trafford Way and seen heading towards Doncaster town centre but have not been seen or heard from since.
Her daughter has distinctive large, brown eyes and brown, curly hair.
Sebjana normally wears dark clothing and Enissa is thought to have been wearing a light pink and white outfit when she was last seen.
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