If Eddie George was running the Tennessee Titans ... he wouldn't be looking for a new QB this offseason, telling TMZ Sports he still believes in Ryan Tannehill.

Of course, it's an unpopular opinion ... because most NFL fans believe the quarterback's three interceptions against the Cincinnati Bengals are the reasons why the Titans aren't playing the Chiefs in the AFC Championship game this weekend.

But, when we got George out in L.A. earlier this week ... the Titans legend said he still thinks Tannehill is good enough to get Tennessee to the Super Bowl next year.