Well, making a list of the most famous actors and actresses is something nearly impossible.

Below you have a small selection of some of the best.

GREAT STARS OF THE GOLDEN AGE

SPENCER TRACY

Spencer tracy state of the union.jpgSpencer Tracy (1900 – 1967) was an American actor, noted for his natural style and versatility. One of the major stars of Hollywood's Golden Age, Tracy was nominated for nine Academy Awards for Best Actor and won two, sharing the record for nominations in that category with Laurence Olivier.
In 1935 Tracy joined Metro-Goldwyn-Mayer, at the time Hollywood's most prestigious studio. His career flourished with a series of hit films, and in 1937 and 1938 he won consecutive Oscars for Captains Courageous and Boys Town. By the 1940s, Tracy was one of the studio's top stars. In 1942 he appeared with Katharine Hepburn in Woman of the Year, beginning a popular partnership that produced nine movies over 25 years. Tracy left MGM in 1955 and continued to work regularly as a freelance star, despite an increasing weariness as he aged. His personal life was troubled, with a lifelong struggle against alcoholism and guilt over his son's deafness. Tracy became estranged from his wife in the 1930s, but never divorced, conducting a long-term relationship with Katharine Hepburn in private. Towards the end of his life, Tracy worked almost exclusively for director Stanley Kramer. It was for Kramer that he made his last film, Guess Who's Coming to Dinner in 1967, completed just 17 days before Tracy's death.

During his career, Tracy appeared in 75 films and developed a reputation among his peers as one of the screen's greatest actors. In 1999 the American Film Institute ranked Tracy as the 9th greatest male star of Classic Hollywood Cinema.

KATHERINE HEPBURN

Portrait of Hepburn, aged 33Katharine Hepburn 1907 – 2003) was an American actress. Known for her fierce independence and spirited personality, Hepburn was a leading lady in Hollywood for more than 60 years. She appeared in a range of genres, from screwball comedy to literary drama, and she received four Academy Awards for Best Actress—a record for any performer. In 1999, Hepburn was named by the American Film Institute as the greatest female star of Classic Hollywood Cinema.
In the 1940s, she was contracted to Metro-Goldwyn-Mayer, where her career focused on an alliance with Spencer Tracy. The screen-partnership spanned 25 years and produced nine movies.
Hepburn challenged herself in the latter half of her life, as she regularly appeared in Shakespearean stage productions and tackled a range of literary roles. She found a niche playing middle-aged spinsters, such as in The African Queen (1951), a persona the public embraced. Three more Oscars came for her work in Guess Who's Coming to Dinner (1967), The Lion in Winter (1968), and On Golden Pond (1981). In the 1970s, she began appearing in television films, which became the focus of her career in later life. She remained active into old age, making her final screen appearance in 1994 at the age of 87.


EDWARD G. ROBINSON

Edward G. Robinson - still.jpgEdward G. Robinson (1893 – 1973) was a Romanian-born American actor. A popular star on stage and screen during Hollywood's Golden Age, he appeared in 40 Broadway plays and over 100 films during a 50-year career. He is best remembered for his tough-guy roles as a gangster, such as his star-making film Little Caesar and Key Largo.
During the 1930s and 1940s, he was an outspoken public critic of fascism and Nazism which was then growing in Europe. His activism included contributing over $250,000 to more than 850 organizations involved in war relief, along with cultural, educational and religious groups.

Robinson's character portrayals have covered a wide range, with such roles as an insurance investigator in the film noir Double Indemnity, Dathan (adversary of Moses) in The Ten Commandments, and his final performance in the science-fiction story Soylent Green. Robinson received an Honorary Academy Award for his work in the film industry, which was posthumously awarded two months after the actor's death in 1973. He is ranked #24 in the American Film Institute's list of the 25 greatest male stars of Classic American cinema.


HUMPREY BOGART

http://abrocomillas.com.ar/wp-content/uploads/2014/01/humphrey-bogart.jpgHumphrey Bogart (1899 – 1957) was an American screen actor whose performances in iconic 1940s films noir  earned him status as a cultural icon.
His first great success was as Duke Mantee in The Petrified Forest (1936), and this led to a period of typecasting as a gangster with films such as Angels with Dirty Faces (1938) and B-movies like The Return of Doctor X (1939).
Bogart's breakthrough as a leading man came in 1941 with High Sierra and The Maltese Falcon. The next year, his performance in Casablanca (1943; Oscar nomination) raised him to the peak of his profession and, at the same time, cemented his trademark film persona, that of the hard-boiled cynic who ultimately shows his noble side. Other successes followed, including To Have and Have Not (1944), The Big Sleep (1946), Dark Passage (1947), and Key Largo (1948), all four with his wife Lauren Bacall; The Treasure of the Sierra Madre (1948); In a Lonely Place (1950); The African Queen (1951; Oscar winner); Sabrina (1954); and The Caine Mutiny (1954; Oscar nomination). His last film was The Harder They Fall (1956).

During a film career of almost 30 years, Bogart appeared in more than 75 feature films. In 1999, the American Film Institute ranked Bogart as the greatest male star of Classic American cinema. Over his career, he received three Academy Award nominations for Best Actor, winning one (for The African Queen).


BETTY DAVIS

Bette Davis - portrait.jpg"Bette" Davis (1908 – 1989) was an American actress of film, television and theater. Regarded as one of the greatest actresses in Hollywood history, she was noted for her willingness to play unsympathetic, sardonic characters and was reputed for her performances in a range of film genres, from contemporary crime melodramas to historical and period films and occasional comedies, although her greatest successes were her roles in romantic dramas.
After appearing in Broadway plays, Davis moved to Hollywood in 1930. She joined Warner Bros. in 1932 and established her career with several critically acclaimed performances. In 1937, she attempted to free herself from her contract, and although she lost a well-publicized legal case, it marked the beginning of the most successful period of her career. Until the late 1940s, she was one of American cinema's most celebrated leading ladies, known for her forceful and intense style. Davis gained a reputation as a perfectionist who could be highly combative, and confrontations with studio executives, film directors and costars were often reported. Her forthright manner, clipped vocal style and ubiquitous cigarette contributed to a public persona, which has often been imitated and parodied.

Davis was the first female president of the Academy of Motion Picture Arts and Sciences. She won the Academy Award for Best Actress twice, was the first person to accrue ten Academy Award nominations for acting, and was the first woman to receive a Lifetime Achievement Award from the American Film Institute. Her career went through several periods of eclipse, and she admitted that her success had often been at the expense of her personal relationships.  In 1999, Davis was placed second on the American Film Institute's list of the greatest female stars of classic Hollywood cinema.

HENRY FONDA

Henry Fonda (1905 – 1982) was a celebrated American film and stage actor with a career spanning more than five decades.
http://www.sergemouilleusa.com/blog/wp-content/uploads/2011/08/henry.jpgFonda made his mark early as a Broadway actor. He made his Hollywood debut in 1935, and his career gained momentum after his Academy Award-nominated performance as Tom Joad in The Grapes of Wrath, a 1940 adaptation of John Steinbeck's novel about an Oklahoma family who moved west during the Dust Bowl. Throughout six decades in Hollywood, Fonda cultivated a strong, appealing screen image in such classics as The Ox-Bow Incident, Mister Roberts and 12 Angry Men. Later, Fonda moved both toward darker epics such as Sergio Leone's Once Upon a Time in the West and lighter roles in family comedies such as Yours, Mine and Ours with Lucille Ball, winning the Academy Award for Best Actor at the 54th Academy Awards for the movie On Golden Pond, his final film role.
Fonda was the patriarch of a family of famous actors, including daughter Jane Fonda, son Peter Fonda, granddaughter Bridget Fonda, and grandson Troy Garity

JOHN WAYNE

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John Wayne (1907 – 1979) and the nickname Duke, was an American actor, director, and producer.An Academy Award-winner for True Grit (1969), Wayne was among the top box office draws for three decades.

Wayne's career took off in 1939, with John Ford's Stagecoach making him an instant mainstream star. Wayne went on to star in 142 pictures. Biographer Ronald Davis says: "John Wayne personified for millions the nation's frontier heritage. Eighty-three of his movies were Westerns, and in them he played cowboys, cavalrymen, and unconquerable loners extracted from the Republic's central creation myth."

Wayne's other well-known Western roles include a cattleman driving his herd north on the Chisholm Trail in Red River (1948), a Civil War veteran whose young niece is abducted by a tribe of Comanches in The Searchers (1956), and a troubled rancher competing with an Eastern lawyer for a woman's hand in marriage in The Man Who Shot Liberty Valance (1962). He is also remembered for his roles in The Quiet Man (1952), Rio Bravo (1959), and The Longest Day (1962). 

LAUREN BACALL

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Lauren Bacall (1924 – 2014) was an American actress known for her distinctive voice and sultry looks. She was named the 20th greatest female star of Classic Hollywood cinema by the American Film Institute, and received an Academy Honorary Award in 2009, "in recognition of her central place in the Golden Age of motion pictures."

Bacall began her career as a model, before making her debut as a leading lady with Humphrey Bogart in the film To Have and Have Not in 1944. She continued in the film noir genre with appearances with Bogart in The Big Sleep (1946), Dark Passage (1947), and Key Largo (1948), and starred in the romantic comedies How to Marry a Millionaire (1953) with Marilyn Monroe and Designing Woman (1957) with Gregory Peck. She co-starred with John Wayne in his final film, The Shootist (1976). Bacall also worked on Broadway in musicals, earning Tony Awards for Applause (1970) and Woman of the Year (1981). Her performance in The Mirror Has Two Faces (1996) earned her a Golden Globe Award and an Academy Award nomination.


BURT LANCASTER

Burt Lancaster - publicity 1947.JPG"Burt" Lancaster (1913 – 1994) was an American film actor noted for his athletic physique, blue eyes, and distinctive smile. After initially building his career in "tough guy" roles, Lancaster abandoned his all-American image in the late 1950s in favor of more complex and challenging parts, and came to be regarded as one of the best motion picture actors in history.
Lancaster was nominated four times for Academy Awards and won once for his work in Elmer Gantry in 1960. He also won a Golden Globe for that performance and BAFTA Awards for The Birdman of Alcatraz (1962) and Atlantic City (1980). His production company, Hecht-Hill-Lancaster, was the most successful and innovative star-driven independent production company in Hollywood in the 1950s, making movies such as Marty (1955), Trapeze (1956), Sweet Smell of Success (1957), Run Silent, Run Deep (1958), and Separate Tables (1958).

In 1999, the American Film Institute named Lancaster 19th among the greatest male star of classic Hollywood cinema.