The assault happened in the Pingle Hill and Middlefield Lane area of Gaisborough between 3am and 4am on New Year’s Day.
A man was attacked by two others and punched and knocked to the ground and money stolen from him.
The two ran off towards Marshalls Yard.
The victim needed treatment for a black eye and cuts and bruises.
Anyone who was in the area and saw the incident or can provide any information should contact police on 101 and leave a message for DC Tina Kennedy on ext 6238
The males are described as white, slim and wearing a light tracksuit and the second man was of a similar build wearing a dark tracksuit.