Muhammad I Tapar
The fifth Sultan of the Seljuk Empire (1105–1118)

Muhammad I Tapar (Persian: محمد اول تاپار; 20 January 1082 – 18 April 1118), was the sultan of the Great Seljuk Empire from 1105 to 1118. He was a son of Malik-Shah I (r. 1072–1092) and Taj al-Din Khatun Safariyya.
Reign
Muhammad was born in 20 January 1082. He succeeded his nephew, Malik Shah II, as Seljuq Sultan in Baghdad, and thus was theoretically the head of the dynasty, although his brother Ahmad Sanjar in Khorasan held more practical power. Muhammad I probably allied himself with Ridwan of Aleppo in the Battle of Khabur River against Kilij Arslan I, the sultan of Rüm, in 1107, in which the latter was defeated and killed. Following the internecine conflict with his half brother, Berkyaruq, he was given the title of malik and the provinces of Armenia and Azerbaijan. Dissatisfied by this he revolted again, but had to flee back to Armenia. By 1104, Berkyaruq, ill and tired of war, agreed to divide the sultanate with Muhammad. Muhammad became sole sultan following the death of Berkyaruq in 1105.
In 1106, Muhammad conquered the Ismaili fortress of Shahdiz, and ordered the Bavandid ruler Shahriyar IV to participate in his campaign against the Ismailis.
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Contemporary correspondence, administrative files and participant testimony can test how later narratives organized the event or institution. The source revision retrieved here is dated Aug 16, 2026. The linked authority identifier is Q1296751. VIAF identifies the subject as 38566673. The Library of Congress control number is n92031618. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1082, 1118, 1105 and 1072.
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This entry incorporates text from “Muhammad I Tapar” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.