Martin Pope (born Isidore Poppick; August 22, 1918 – March 27, 2022) was an American physical chemist and professor at New York University. His discoveries of ohmic contacts and research in the fields of organic insulators and semiconductors led to techniques enabling organic semiconductors to carry relatively large currents, and to convert electricity into light and vice versa. These discoveries have had application in electrophotography, organic light-emitting diodes (OLED), photovoltaic cells, biological sensors, transistors, molecular electronics, and batteries.