Colombian private international law on negotiable instruments is intriguing: very few rules in recent codes and legislation contrast with a rather extensive regulation in antique treaties. Despite both choice-of-law and substantial rules, there are only three rulings of the Colombian Supreme Court on the subject matter. In this context, the IADIP Draft on Private International Law for Colombia studied in this chapter seems to offer a satisfactory and necessary regulation. Furthermore, the IADIP Draft modernizes Colombian law in various manners, such as embracing a different connecting factor and introducing freedom of choice.