Albert J. Jackson Jr. (November 27, 1935 – October 1, 1975) was a renowned American drummer, producer, and songwriter, celebrated for his significant contributions to the genres of R&B, funk, soul, and Memphis soul. Born in Memphis, Tennessee, Jackson was introduced to music at an early age by his father, Al Jackson Sr., who led a jazz/swing dance band. By the age of five, Jackson was already performing on stage with his father's band. He later played in Willie Mitchell's band and the Ben Branch Band, gaining recognition for his exceptional drumming skills.

Jackson was a founding member of Booker T. & the M.G.'s, a group of session musicians at Stax Records known for their instrumental tracks. He earned the nickname "The Human Timekeeper" due to his impeccable drumming ability. His work at Stax Records made him one of the most influential drummers in recorded music history, providing the backbeat for artists such as Rufus Thomas, Carla Thomas, Eddie Floyd, Sam & Dave, and Otis Redding. He also co-wrote and played on several hits by Al Green, including "Let's Stay Together" and "I'm Still in Love with You."

Jackson's legacy was cemented with his posthumous inductions into the Rock and Roll Hall of Fame as a member of Booker T. & the M.G.'s in 1992 and the Memphis Music Hall of Fame in 2015. His innovative drumming style and contributions to the music industry continue to be celebrated and remembered.