Synonyms: Central Ostan, Central Province, Central'nyj ostan, Markazi, Markazi Province, Markazí, Markazī, Merkezi, Merkezi Eyaleti, Merkezî, Ostan-e Markazi, Ostān-e Markazī, Regione di Markazi, Second Province, Ustoni Markazi, astan mrkzy, marukyazu~i zhou, mrkzy, zhong yang sheng, Устони Марказӣ, Центральный остан