Steve McQueen, 1965 - 1968
The Cincinnati Kid
Nevada Smith
The Sand Pebbles
The Thomas Crowne Affair
Bullitt
Clint Eastwood, 1970 -1971
Two Mules For Sister Sarah
Kelly's Heroes
The Beguiled
Play Misty For Me
Dirty Harry
Clint Eastwood, 1973 - 1976
High Plains Drifter
Magnum Force
Thunderbolt and Lightfoot
The Eiger Sanction
The Outlaw Josey Wales
Alfred Hitchcock, 1954 -1963
(director only, but didn't he have a cameo in all of those?) And that's 10 in a row. Couldn't stop at five.
Dial M For Murder
Rear Window
To Catch a Thief
The Trouble With Harry
The Man Who Knew Too Much
The Wrong Man
Vertigo
North By Northwest
Psycho
The Birds
Lee Marvin had an impressive run 1961 -1966, with multiple award nominations and awards.
The Comancheros
The Man Who Shot Liberty Valance
Donovan's Reef
The Killers
Cat Ballou
Ship of Fools
The Professionals
The Dirty Dozen