"After spending considerable time with Jim over the last week, we think he will be an excellent fit with our team, coaching the quarterbacks and helping with our offense," Ravens coach John Harbaugh said. "We believe he enhances our staff. Jim has a tremendous history coaching at the college and pro level, especially working with quarterbacks and providing help with offenses.
"The timing is right to add a quarterbacks coach after Cam and Joe worked so closely and well together this year. It's the right step for us now."
Before taking over as head coach at Indianapolis, Caldwell spent seven seasons as the team's quarterbacks coach. Under his direction, Manning won three NFL MVP awards. In 2004, Indianapolis went 12-4 behind Manning, who threw for a career-high 49 touchdowns and just 10 interceptions.
"I am really excited to work with coach Harbaugh, Cam and the rest of the coaching staff," Caldwell said. "It's a great fit for me, and I'm happy they saw it that way. I can't wait to get started with the Ravens, an organization that from top to bottom is one of the NFL's best."