Felix Grant is credited as the person who introduced Brazilian music—and especially Bossa Nova—to the United States in the 1960s.

In 1964 Felix Grant was awarded the Order of the Southern Cross (the highest civilian honor the Brazilian government can bestow upon a foreigner) in recognition of his broadcasting efforts in behalf of Brazilian music and musicians.

He also received honors from the City of Washington, including plaques, proclamations, and the designation of a "Felix Grant Day" in 1985.

He established a scholarship fund under his name at the University of the District of Columbia to the benefit of jazz music students.

45,000 LP albums, 10,000 CDs, reel-to-reel tapes, audio cassettes, 45s, and 78s which were donated to the university by Grant.