The Grammy Award for Best Rap Song is an honor presented at the Grammy Awards, a ceremony that was established in 1958 and originally called the Gramophone Awards, to recording artists for quality songs in the rap music genre. Honors in several categories are presented at the ceremony annually by the National Academy of Recording Arts and Sciences of the United States to "honor artistic achievement, technical proficiency and overall excellence in the recording industry, without regard to album sales or chart position".

The Grammy Awards, stylized as GRAMMY, and often referred to as the Grammys, are awards presented by the Recording Academy of the United States to recognize outstanding achievements in the music industry. They are regarded by many as the most prestigious and significant awards in the music industry worldwide. They were originally called the Gramophone Awards, as the trophy depicts a gilded gramophone.