The Magpies announced a four-year sponsorship deal with Wonga which will see the company's logo worn on their shirts from next season and £1.5million ploughed into the club's Academy and the Newcastle United Foundation Enterprise Scheme.
The new sponsors reveal that they had also bought the naming rights to the 52,000-capacity stadium and, having listened to the reaction of fans when news of a potential agreement emerged at the weekend, have ended a controversial period in the club's recent history.
A spokesman for Wonga said: "We listened over the last three days and we saw what really matters to the fans.
"Football is an emotional sport and it is obviously really important to them. We listened to what they wanted and that is why we did it."