Peripheral ulnar-sided tears of the triangular fibrocartilage complex (TFCC) are common injuries and are amenable to arthroscopic repair. This article describes an all-arthroscopic knotless technique for TFCC repair. This technique has the advantage of being all arthroscopic using 3 portals, has the ability to repair both the superficial and deep layers of the articular disk, repairs the articular disk directly back to bone, and does not require any suture knots that may irritate the surrounding soft tissues. The surgical technique is described in detail.