Officers in Hounslow are concerned following the disappearance of 41-year-old Constantin Cristinel Talaba, who has not been seen in over two days.
The last sighting of him was when he left his home in Chatsworth Crescent on Sunday (February 4) just before midnight, Metropolitan Police said.
He is described as being around 5ft 10ins tall, of medium build, with short grey hair and has a distinctive scar on his left cheek.
He was last seen wearing blue jeans, a black jacket and white Nike trainers.
Mr Talaba is known to frequent the New Haw area in Surrey.
An appeal sent out via Twitter @metpoliceuk said: "Police in Hounslow are appealing for info on missing Romanian 41 yr old Constantin Talaba who hasnt been seen since 5 February.
"Anyone with information is asked to call police on 101."
Anyone who has information regarding this man's whereabouts is urged to get in touch with police on 101 or Missing People on 116000.
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