Merson is now a TV pundit and was one of 'Harry's Heroes' during the recent ITV1 series.
As well as talking about his career, Merson will also sign items and have his photo taken with fans. The event - which will also include an auction - will cost £30 and will be held RE Resource Hereford Suite on Friday, February 19, with a 7.30pm start.
“We are delighted to be partnering with Purple Sector Events to bring Paul Merson to Edgar Street," said Hereford General Manager James Watts.
"In the current climate, we have to look at ways to generate extra revenue for Hereford FC and events like this are a perfect way to do so."
Purple Sector Events owner Keiron McGill added: “We are absolutely thrilled to be working with Hereford FC on this truly special event, and we hope this proves to be a huge success for the club. We are passionate about helping clubs that are at the centre of their communities, especially during these tough times where there has been precious little income while the overhead costs have remained. This event will be one that is talked about for years to come and we hope that you can come and support it and help the club to thrive."
To book your place, visit www.paulmerson10.eventbrite.co.uk or phone 07908 189 418. A number of food options will be available to pre-order, starting from £10.