Chludov Psalter (Russian: Хлудовская псалтырь; Moscow, Hist. Mus. MS. D.129) is an illuminated marginal Psalter made in the middle of the 9th Century. It is a unique monument of Byzantine art at the time of the Iconoclasm, one of only three illuminated Byzantine Psalters to survive from the 9th century. It was kept at Mount Athos until 1847, when a Russian scholar brought it to Moscow. The psalter was then acquired by Aleksey Khludov, whose name it bears today. It passed as part of the Khludov bequest to the Nikolsky Old Believer Monastery and then to the State Historical Museum.