We Are Men United was due to be held on 27th May at Stoke City Football Club.
"Ticket sales have not progressed in line with our projections and thus we have decided to close the event and refund all those who purchased tickets," a statement said.
The event was intended to "gather, inspire and equip a nation of men to live for God's glory".
World champion boxer Nigel Benn and evangelist Andrew Palau were due to attend alongside worship from Martin Smith and Noel Robinson.
The statement said the event was being cancelled "with sadness" but that We Are Men United "shall continue to work with men through our building company, prison ministry and rehabilitation facility".
Group members are now "prayerfully considering our next steps".
All tickets should be refunded within the next 30 days.
