Monitoring the behavior of multinational corporations is an important public health priority because businesses negatively affect health in a variety of ways. These effects can be mitigated by defining standards of corporate behavior and implementing regulations to prohibit and sanction harmful behavior. In the last two decades, market signals and corporate scorecards have been increasingly used to motivate corporate actors to behave socially responsible. Two examples relevant to global health are the Access to Medicine Index and the Global Index of the Access to Nutrition Initiative. The article is an opinion on the effectiveness of corporate rankings in the responsibility of corporations for the impact on health.