Gonzalez, who turns 35 in February, told the newspaper that Saturday's 48-21 NFC Divisional Playoff loss to the Green Bay Packers could be his last game.
"It's always a possibility," Gonzalez said. "Year 15 is a long time."
Gonzalez, voted to his 11th Pro Bowl after catching 70 passes in 16 starts this season, has never been part of a team that won a playoff game.
"I feel just as down, just as devastated, as I did last time," Gonzalez said of the top-seeded Falcons' early exit. "It doesn't make a difference that it's towards the end of my career. It's in my mind, don't get me wrong, but they all hurt."
Gonzalez told the Journal-Constitution that he's impressed with the Falcons' core roster and believes they'll compete for years to come.
"That's definitely going to weigh into my decision whether or not I come back," he said.