"King Tim III (Personality Jock)" is a 1979 hip hop song by the Fatback Band from the disco album Fatback XII. Engineered by Delano “Rock” McLaurin and released on March 25, 1979,^[1] this song is often cited^[2] as the beginning of recorded hip hop music. The title refers to vocalist Tim Washington. A few months later, "Rapper's Delight" came out, which is widely regarded as the first commercially released hip hop song.

The song was originally the B-side of the 7-inch single, with the A-side "You're My Candy Sweet" a mid-tempo disco song. However the song stalled at #67 after 4-weeks on the R&B chart and was replaced the following week with "King Tim III (Personality Jock)" on the chart. It peaked at #26 on the R&B chart and stayed on for 11 weeks.

The origin of "King Tim III" starts when Bill was in his studio with his co-producer Jerry Thomas or as Bill called him "his right hand man". Bill said to him "Jerry, look at this album we doing , it's the Bad Back Seven album." Jerry asks him what he want him to do and Curtis says "I don't know... let's do a rap man!" Jerry said the following sentence, "Do a rap? Hell, we can't even talk!" Curtis recalls, "One of the roaders is in the studio with us... Avery, and he said "Hey man, I got a buddy who lives up there in the projects, he's a great rapper.", and I said "Can he rap?" and he said, "Yeah man!" and I said "Bring him in, tomorrow night." and he brought in Timothy Washington and I had to track him down 8 hours in Venice and everything. I flew him in on the trip and I said "Hey man, go in there and start rapping." , and he just started rapping... and that's how it all came about."^[3]