Robert Preston averages 6.70 across 21 rated films as an actor, ahead of John Wayne at 6.47.
Dot size shows IMDb votes. Films with fewer than 1,000 votes sit on the baseline.
| Reap the Wild Wind | 1942 | 6.6 | as Dan Cutler | as Captain Jack Stuart |
 How the West Was Won | 1962 | 7.1 | as Roger Morgan (segment: The Plains) | as Gen. William Tecumseh Sherman (segment: The Civil War) |
