"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.

Ronald Isley is an American singer, songwriter, and record producer. Isley is the lead singer and founding member of the family music group The Isley Brothers.