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The year 1943 in film featured various significant events for the film industry.
Events
- January 23 – The film Casablanca is released nationally in the United States and becomes one of the top-grossing pictures of 1943. It goes on to win the Best Picture and Best Director awards at the 16th Academy Awards.
- February 20 – American film studio executives agree to allow the United States Office of War Information to censor films.
- June 1 – Veteran English stage and screen actor Leslie Howard dies at the age of 50 in the crash of BOAC Flight 777 off the coast of Galicia, Spain. While best remembered for his role as Ashley Wilkes in Gone with the Wind, Howard had roles in many other notable films and was twice nominated for the Academy Award for Best Actor.
- December 31 – New York City's Times Square greets Frank Sinatra at Paramount Theatre.
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! style="text-align:center;"| 2
|For Whom the Bell Tolls
| Paramount
| $6,300,000
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! style="text-align:center;"| 3
|The Song of Bernadette
| 20th Century Fox
| $4,700,000
|-
! style="text-align:center;"| 4
|Stage Door Canteen
|United Artists
| $4,350,000
|-
! style="text-align:center;"| 5
|Star Spangled Rhythm
| Paramount
| $3,850,000
|-
! style="text-align:center;"| 6
|Thousands Cheer
|MGM
| $3,751,000
|-
! style="text-align:center;"| 7
| Casablanca
| Warner Bros.
| $3,398,000
|-
! style="text-align:center;"| 9
|Destination Tokyo
| Warner Bros.
| $3,237,000