The fun will take place at both markets between 9am and 2pm, with the Mayor of Wolverhampton, Councillor Barry Findlay, judging the best 'spooky carved pumpkin' competition and announcing the winners.
To enter, take your finished pumpkin along on the day - the deadline for entries is 1pm at Bilston Market, adjacent to the bus station, and 2pm at the city centre market, Market Square.
The winner at each market will receive a family ticket to this year's pantomime at Wolverhampton Grand Theatre, Aladdin, second place will win a £50 Waterstones gift voucher, and third place will bag a family pass to Air Space in Wednesfield.
The City of Wolverhampton Council's Cabinet Member for City Environment, Councillor Steve Evans, said: "The market traders are getting in the spirit for Halloween as they dress up for the occasion.
"I would urge families to get along to the city centre market or Bilston market and get involved in the fun.
"While they are there they can bag some scarily impressive bargains on fresh fruit, meat, and fish, and other goods."
A colouring competition is also being run for children aged up to 16, and the entry form can be downloaded at Type=links;Linkid=7702;Title=Spook-tacular;Target=_blank; or picked up from either market. The best coloured-in spooky pumpkin will win a £100 book voucher for their school and an art kit for themselves. Entries must be submitted at either market by 2pm on the day. The winner will be contacted after the event.
As well as competitions, there will be crafts, face painting, games, kids' rides, and a ghost hunt to enjoy.
- released: Thursday 20 October, 2016