Baltimore (7-3) made several big plays on defense despite playing without linebacker Ray Lewis, who was out for the first time since 2007 with a toe injury.
The Ravens' defensive corps picked off Bengals rookie signal-caller Andy Dalton three times, running two of them back for touchdowns.
They also stopped him on a last-chance drive as the Bengals pushed to forge a tie with Pittsburgh atop the AFC North.
Dalton hurled a 49-yard touchdown pass to Andre Caldwell during a fourth-quarter rally for Cincinnati (6-4), which was missing rookie receiver A.J. Green (knee).