The subscapularis is the strongest rotator cuff muscle in the shoulder. Until recently, most surgical repairs were performed through an open approach. Furthermore, the reporting of arthroscopic repair techniques and outcomes is fairly limited. This is likely due to the difficulty involved in all-arthroscopic repairs and the relative rarity of this injury compared with injuries of the other rotator cuff tendons. Arthroscopic subscapularis repair can be challenging, even for an expert surgeon, and attempting a double-row repair adds further complexity. Given these issues, this article provides techniques to allow for successful arthroscopic double-row subscapularis repair and avoid potential complications. The key features of an arthroscopic double-row repair include portal placement, surgical technique, and tips to avoid potential pitfalls, all of which are discussed.