The Argo star sparked speculation he was interested in taking up a position in the Senate after making comments about politics in an interview, but last month he addressed the rumours, saying he was not running for office.
He has now confirmed to The Hollywood Reporter that he is too busy making films to think about a career in politics, and admitted he thought the speculation was "funny".
Ben, 40, said: "I was not serious. That was not something that I genuinely considered doing."
The father-of-three, who was speaking at the National Board of Review awards ceremony, continued: "I thought it was funny that it came out like that, and I have a great deal of respect for the political process, but I'm really at a prime point in my life with my professional career here.
"I'm loving the opportunities I'm getting, I'm loving the people I'm getting to work with, so that's really where my head's at right now."