The film - which won Oscars for best picture, screenplay and director - earned the inaugural "best campaign of the year" award at the 37th annual Key Art Awards, which honor the best movie posters, trailers and other marketing efforts.
The Key Art Awards, sponsored by the Hollywood Reporter, were presented Friday during a ceremony at the Hyatt Regency Century Plaza hotel.
The best-campaign award recognizes the collective creative materials to promote the film as well as the overall marketing strategy developed for its launch.
A panel of experts that included filmmakers David Fincher and Kevin Smith picked "No Country" for the prize. The film also won three other awards including best trailer and best graphics.
"The Simpsons Movie" and "300" were the night's other big winners.
"The Simpsons Movie" won four awards, including honors for its theatrical cardboard "standees" and its Web site design, while "300" was recognized for its print ads and TV spots.
"Bee Movie," "Ratatouille," "Juno" and "Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan" were each double winners.
Judd Apatow received the Visionary Award, which recognizes filmmakers who inspire marketing creativity.
Watch the Winning Trailers:
First Place, Action/Adventure/Horror: "300" (Warner Bros.)
First Place, Comedy: "Superbad" (Sony)
First Place, Documentary: "God Grew Tired Of Us" (New Market)
First Place, Drama: "No Country For Old Men" (Miramax)
First Place, Family: "Bee Movie" (Dreamworks/Paramount)
First Place, Home Entertainment: "Blade Runner (The Final Cut)" (Warner Bros. Home Entertainment)
Check Out The Winning Movie Web Site:
Best Web Site Design: "The Simpsons Movie" (20th Century Fox)