This paper calls on the philanthropic community to take advantage of the opportunity offered by the first World Humanitarian Summit (WHS) in Istanbul in May 2016 to make important changes in the way it contributes its share of the global response to humanitarian crises. In Section 1, the paper looks at the challenges shared by all who contribute, including the philanthropy sector. Section 2 discusses philanthropy's current contributions and potential, including some of its shortcomings. Section 3 examines how the Summit is setting the stage for change -- change for which philanthropy can be a greater part. Section 4 concludes the paper with a set of actionable recommendations for how philanthropy's contribution to humanitarian crises can be greatly improved.