It is a lofty claim for a side which slipped to 12th in the world following the loss to Tonga, a result which was followed by Andy Robinson's resignation as head coach last month, and faces England at Twickenham in the Calcutta Cup on February 2 on the opening weekend of the Six Nations.
Lamont's confidence comes from inner belief and witnessing how Stuart Lancaster reformed England from a rabble into a side which ended the All Blacks' 20-Test unbeaten run earlier this month. The 31-year-old said: "I'd like to win it (the Six Nations). For Scotland to win it we need to be clinical in every game and flawless."
He added: "We can do it, as we've shown against the big teams. We can all on our day be those world beaters, it's just about getting that collective spot on every game. But the rollercoaster ride of performances needs to go.
"We've got England first up, who will be on great form because they had a great win against New Zealand and they've got a good team together. A change of coach is always an uncertain time, but it doesn't mean it can't be done. Lancaster came in and has turned it round. It can be done."
Lancaster was in interim charge of England last February when his side won at Murrayfield and claimed four wins in the Six Nations to finish runners-up to Wales.
The Scottish Rugby Union are apparently in no rush to announce the anticipated appointment of Scott Johnson as interim head coach, as they scour the globe for a permanent successor to Robinson.
Lamont, who has 71 caps, has not yet been consulted by SRU chief executive Mark Dodson over the appointment of Robinson's successor, but believes Australian Johnson, appointed assistant to Robinson, could fill the role well.
"He's someone that knows the players, he is a good coach and it would probably be the logical step-up," Lamont added.
"But as a player, it's the powers that be that will decide that."