Officers believe the man is linked to a series of thefts, believed to have started in November spanning until 26 May.
Police received reports of charity tins being stolen from businesses in Eastbourne, Rye, St Leonards, Hailsham, Haywards Heath, Burgess Hill, Roberstbridge, Uckfield and Lewes.
The man is described as white, 5’ 10”, in his early 60s and with white hair.
Investigating officer Anna Archer said: “We have received reports of charity tins being stolen across the County and we have managed to obtain CCTV for a number of these thefts.
“Any theft is unacceptable but stealing money from a charity is particularly abhorrent.
“If you have any information on who these women might be please get in contact with us immediately.”
To report information to Sussex Police please go online or call 101 quoting reference 773 of 10/04.