"I" is a song by American rapper Kendrick Lamar featuring Ronald Isley of The Isley Brothers. It was released on September 23, 2014 as the lead single from Lamar's third studio album To Pimp a Butterfly. The song uses music from "That Lady", written by and originally performed by R&B group The Isley Brothers, elements from which were re-recorded rather than being directly sampled from the original record. "I" won two awards at the 2015 Grammy Awards: Best Rap Performance and Best Rap Song.

The Grammy Award for Best Rap Performance is an honor presented to recording artists for quality rap performances. It was first presented at the 31st Annual Grammy Awards in 1989 and again at the 32nd Annual Grammy Awards in 1990, after which point the award was split into two categories: Best Rap Solo Performance and Best Rap Performance by a Duo or Group. These two categories were combined again in 2012 as a result of a restructure of Grammy categories, and the reinstated Award for Best Rap Performance was presented at the 54th Grammy Awards in 2012. The restructuring was the consequence of the Recording Academy's wish to decrease the number of categories and awards and to eliminate distinctions between solo and duo or group performances.