Male Actors:
* Marlon Brando: A method actor known for his intense performances in films like "A Streetcar Named Desire" (1951), "On the Waterfront" (1954), and "The Wild One" (1953).
* James Dean: A rebellious icon, he starred in only three major films ("East of Eden," "Rebel Without a Cause," and "Giant"), but his tragic death at age 24 solidified his status as a cultural icon.
* Humphrey Bogart: Though his career began earlier, Bogart reached new heights in the 1950s with films like "The African Queen" (1951), "Casablanca" (1942), and "The Treasure of the Sierra Madre" (1948).
* Clark Gable: Known as "The King of Hollywood," Gable starred in many classic films during the 1950s, including "Mogambo" (1953), "The Misfits" (1961), and "It Happened One Night" (1934).
* Gary Cooper: A ruggedly handsome actor, Cooper starred in numerous Westerns and dramas, including "High Noon" (1952) and "The Quiet Man" (1952).
* Spencer Tracy: Known for his dramatic roles, Tracy was a versatile actor with many acclaimed performances in the 1950s, including "Bad Day at Black Rock" (1955), "The Old Man and the Sea" (1958), and "Guess Who's Coming to Dinner" (1967).
* Burt Lancaster: A charismatic actor known for his physicality and intensity, Lancaster starred in films like "From Here to Eternity" (1953) and "Elmer Gantry" (1960).
* Kirk Douglas: A powerful actor known for his roles in films like "Spartacus" (1960) and "Paths of Glory" (1957).
* Cary Grant: A debonair leading man, Grant starred in many successful romantic comedies and dramas in the 1950s, including "North by Northwest" (1959), "An Affair to Remember" (1957), and "Charade" (1963).
* Gregory Peck: Known for his classic good looks and dramatic roles, Peck starred in films like "Roman Holiday" (1953), "To Kill a Mockingbird" (1962), and "The Guns of Navarone" (1961).
Female Actors:
* Marilyn Monroe: A sex symbol and icon, Monroe starred in films like "Gentlemen Prefer Blondes" (1953) and "The Seven Year Itch" (1955).
* Audrey Hepburn: A sophisticated and elegant actress, Hepburn starred in films like "Roman Holiday" (1953), "Breakfast at Tiffany's" (1961), and "My Fair Lady" (1964).
* Grace Kelly: A beautiful and talented actress, Kelly starred in films like "Rear Window" (1954) and "High Society" (1956) before marrying Prince Rainier III of Monaco.
* Elizabeth Taylor: Known for her beauty and dramatic roles, Taylor starred in films like "Cat on a Hot Tin Roof" (1958) and "Giant" (1956).
* Jane Russell: A voluptuous actress known for her roles in films like "The Outlaw" (1943) and "Gentlemen Prefer Blondes" (1953).
* Rita Hayworth: Known for her beauty and dancing abilities, Hayworth starred in films like "Gilda" (1946) and "Salome" (1953).
* Kim Novak: A beautiful and mysterious actress, Novak starred in films like "Vertigo" (1958) and "Picnic" (1955).
This list is not exhaustive, and many other talented actors made their mark in the 1950s. This decade was a time of great change in Hollywood, and the actors mentioned above helped to shape the landscape of film and become enduring icons.