Longden made 368 League appearances after being brought to the club by Allan Clarke in 1983, bettered only be legendary right-back Jack Brownsword, and continued in a variety of backroom roles after hanging up his playing boots.
This included running the club restaurant and Iron Bar, before working as a coach in the club’s youth setup.
But he has now left Glanford Park for good, opting to take a career break and run a post office in North Yorkshire.
He told the Scunthorpe Telegraph: “Now is the right time to move on, leave football and do something different.
“I will miss the people of Scunthorpe, and I would like to thank those who came for a farewell drink with me this week.
“But, having made the decision to move on, we are now looking forward to the new challenge.”
His Iron career highlights include the 1992 play-off final, where he scored in the penalty shootout defeat to Blackpool, the famous League Cup win over Chelsea and games against Leeds United and Tottenham Hotspur.