Oktan Nalbantoğlu was born in 1963 in Ercis district of Van province. After completing his primary, secondary and high school education in Ankara, he graduated from the Department of Landscape Architecture, Ankara University in 1986. In 1988 and 1997 he completed Master and PhD programs at the same university. Oktan Nalbantoğlu ON Design Urban Design, Landscape Architecture and Architecture Ltd., who is currently working in Bilkent University, Faculty of Fine Arts, Design and Architecture, Urban Design and Landscape Architecture, and carrying out design studio and vocational application courses. He owns the company. After graduation, Nalbantoğlu worked in various public and private sector establishments, in the design and implementation offices of local governments and in international companies. In this period over thirty years, he has won awards in many national and international competitions, has been a member of the jury and has implemented a number of application projects. Participating in various conferences, meetings and seminars, Nalbantoğlu has contributed to his professional and educational life as a calling speaker, panelist and workshop executive and organizer.