Knowledge Is King is the third solo studio album by American rapper Kool Moe Dee, released on May 30, 1989, via Jive Records.

Production for the album was handled by Teddy Riley, LaVaba Mallison, Pete Q. Harris, and Kool Moe Dee himself.

[6] The album spawned four charted singles: "Let's Go", "All Night Long", "I Go to Work", and "They Want Money".

"They Want Money" went the most successful single of the effort, peaking at #3 on the Hot R&B/Hip-Hop Songs, #2 on the Hot Rap Songs and #91 on the UK Singles Chart.

"All Night Long" peaked at #70 on the Hot R&B/Hip-Hop Songs, and "Let's Go", a diss track towards Kool Moe Dee's foe LL Cool J, peaked at #11 on the Hot R&B/Hip-Hop Songs.