This document discusses OpenStreetMap and crisis mapping. It describes how OpenStreetMap was used to map areas affected by the 2010 Haiti earthquake by tracing satellite imagery. It also discusses how OpenStreetMap was used for crisis mapping in New Zealand earthquakes and Japan's 2011 earthquake and tsunami. The document promotes OpenStreetMap as open source, open data, and open collaboration for crisis response and provides contact information for the OpenStreetMap Foundation Japan.