Androula Nassiopoulou, Director of Research at the Institute of Nanoscience and Nanotechnology of the National Centre for Scientific Research “Demokritos”, was honored with the “UNESCO Medal for outstanding contribution to the development of nanoscience and nanotechnologies” for her research in Si nanostructures for nanoelectronics and sensors. The Medal was awarded during a ceremony held at the UNESCO headquarters in Paris on November 22, 2018. She was the only woman among the ten recipients of the 2018 Award. Established in 2010, the Medal is presented each year by the Director-General of UNESCO to prominent scientists, public figures and organizations that contributed to the development of nanoscience and nanotechnologies. The award was created at the initiative of the International Commission responsible for developing the nanoscience and nanotechnologies theme for the Encyclopedia of Life Support Systems (EOLSS).