The 73-year-old actor, who plays a lawyer in the film, took to Twitter to make the announcement.
"'PINK' invited for a special screening of the film at UN Head Quarters, in New York .. By Assistant Secretary General .. Honoured," Bachchan posted.
"Pink", directed by Aniruddha Roy Chowdhury, also starred Taapsee Pannu, Andrea Tariang and Kirti Kulhari in lead roles. It released on September 16.