"Daniel is wearing white Nike trainers, grey bottoms, stripey jumper, white, grey and yellow and blue jacket.
Lyndsey Craven, 45, and eight-year-old Daniel Becic were last seen in Armley, Leeds before vanishing.
"Lyndsey Craven 45 years and Daniel Becic 8 years.
A West Yorkshire Police spokesperson said: "Concerns for missing mother and son from Armley, Leeds.
A MUM and son have gone missing as cops launch an urgent search for the pair.
