David R. Koon (born March 18, 1947) is a former American Democratic politician who represented District 135 in the New York State Assembly, which includes the towns and villages of East Rochester, Penfield, New York and Webster (town), New York, and Fairport, neighboring communities located in upstate New York in the eastern suburbs of Rochester from 1996 to 2010.
Koon successfully ran for the 135th Assembly District seat in a special election held in February 1996 (to replace James Alesi, who had been elected to the state senate). He was elected to a full term in November of that year. Koon serves as a member of the Alcoholism and Drug Abuse; Economic Development, Job Creation, Commerce and Industry; Local Governments; Small Business; and Library and Education Technology Committees. He is also Vice Chair of the Legislative Commission on Rural Resources and Vice Chair of the Legislative Commission on Toxic Substances and Hazardous Waste.
In 1998, through Saint John Fisher College, Koon and his wife Suzanne were instrumental in creating and managing the Jennifer Patterson Koon Peacemaking Foundation, in honor of their daughter. The Foundation "recognize(s) and honor persons who have made a significant contribution to peacemaking and who foster and stimulate a commitment to peacemaking in our society." One of Koon's legislative priorities has been full funding for E911, a system of automatically locating those who've called 911, in New York State. His daughter had called 911 during her abduction ordeal, but although the call lasted 20 minutes, 911 dispatchers were not able to locate her. Although E911 had received some funding in the state since 1991, it had not been fully implemented as late as 2003. Koon pressed his case in 2003, against opposition from then-governor George Pataki.