A maidān is a Persian term for any open plain, park or square. It can be translated literally as 'field'.

• Maidan (Isfahan) - the great royal square of Isfahan, a world heritage site.
• Maidan (Kolkata) - the Maidan park in Kolkata
• Maidan (Karnataka) - an unofficial region of Karnataka state of southern India, on the Deccan plateau
• Maidan () is a meeting or gathering place, market place, forum, etc., or simply "area."
  • Maidan Nezalezhnosti - Independence Square is the central square of Kyiv best known for mass protests during the Orange Revolution.
• Mäydan/Мәйдан is a square and area in Tatar language and also the place of Sabantuy.
• The term "Maidan" is also applied to one of the valleys in the Afridi country of Tirah in Pakistan

The Ukrainian language uses the Cyrillic alphabet, and the letter й may be transliterated into an I, Y, or J, depending on the transliteration system in use, hence majdan or maidan.

Majdan is also a common location name found in Poland, Serbia, Slovakia, Ukraine.