Bartoli, the 15th-seed, advanced to the Wimbledon finals for the second time in her career with a 6-1, 6-2 win over Kirsten Flipkens, the 20th seed. Lisicki, seeded 23rd, topped fourth-seeded Agnieszka Radwanska 6-4, 2-6, 9-7.
Lisicki -- who stunned No. 1 seed Serena Williams in the fourth round -- reached the final in a major for the first time in her career after splitting the first two sets with Radwanska and then overcoming a 3-0 lead in the third set.
She broke serve to go up 5-4 but Radwanska answered with a break of her own, before Lisicki broke once more to go up 8-7 and then held serve in the decisive game.
"I just fought with all my heart," Lisicki said. "I believed that I could still win no matter what the score was. I thought, 'I've done it against Serena so you can do it today as well, just hang in there.' It gave me so much confidence and I'm just so, so happy I was able to finish it."
"Oh my gosh, I just really can't believe it right now. I was playing so great," Bartoli, 28, said after her win.
"Today I saw the ball like a football. I was playing so well. I was hitting the ball very cleanly from the start. She was playing a lot of slices so I needed to be very good with my footwork."
Flipkens, 27, was battling a sore knee Thursday, the result of ongoing problems with blood clots in her legs.
"I think maybe she was a bit injured today," Bartoli said. "It must be hard for her to be injured in the semifinal of Wimbledon, but she deserved a lot of respect."
Bartoli was the 2007 Wimbledon runner-up, losing to Venus Williams.
The winner of Saturday's match will receive $2.4 million.