The event, which has been going 10 years, was in jeopardy because organisers were struggling to cope with the workload involved.
However, following an appeal in the Henley Standard, several people have offered to help.
The fair is organised by volunteers on behalf of the Watlington Business Association to raise funds for the town's Christmas trees and decorations. It is held on the first Saturday in December and last year attracted 1,000 visitors, a record.
Co-ordinator Sam Swanson said she had received several emails from people offering to help after the article was placed in the window of the post office in High Street, together with some photographs from the event.
As a result, the organising committee now has 10 members compared with five previously.
Mrs Swanson, who runs Chiltern Pet Partners with her husband Adam, said: "I'm really pleased.
"I had three emails from people who enjoyed the fair, saying they had no idea it was under threat and they would love to help out.
"People assumed it was a parish council thing and they had no idea it was struggling as much as it was.
"We were all really worried there wasn't going to be an event this year, so we're really happy that people have come forward. We haven't split the jobs yet because it's a bit early for that but everyone just wants to be involved."
Mrs Swanson hopes that having new members on the committee will produce some fresh ideas.
She added: "I was very aware that the fair couldn't carry on as it was as we were really struggling in the lead up to it and on the day but we would have all been very upset if last year had been the last one."
The committee will meet in July to plan this year's event, which will be held on December 5.
There will be a range of stalls selling food and crafts as well as entertainment.
Any extra funds raised are donated to the youth groups that help out on the day.