Jang has built up an informal "repertory company" of actors who have appeared in many roles in his films. Most notable of these is Jung Jae-young, who has appeared in ten films directed or written by Jang and whom Jang has described as his "muse" . Other frequent collaborators include Shin Ha-kyun, who has been featured in eleven films. Other actors who have appeared in several films by Jang include Ryu Seung-ryong, Jang Young-nam, Im Won-hee, and Cha Seung-won.
