Vice-Admiral Haji Mohammad Siddiq Choudri (Urdu: حاجى محمد صديق چودھری; b.31 january 1912—27 February 2004), HPk, MBE, HI(M), popular as HMS Choudhri, was a three-star rank admiral in the Pakistan Navy who was the first native chief of staff of Pakistan Navy.
In 1953, he was appointed as second Commander-in-Chief after taking over the command from Royal Navy’s Rear Admiral J.W. Jefford, and served under two Governor-Generals from 1953–56, and then under President Iskander Mirza from 1956 until 1959. He resigned from his command due to differences regarding the navy’s plans of modernization and to end the interservice rivalry with Army GHQ, Pakistan MoD, and the Presidency on 26 January 1959. He was one of the only few military officials who resigned from their commission over the disagreement with the civilian government and was eventually succeeded by Vice-Admiral A. R. Khan on 28 February 1959.
He died on 27 February 2004 and was buried in military graveyard in Karachi with full military
After retiring from Navy, he went on to establish Merchant Navy and promoted civilian shipping trade throughout his life. After retiring from Navy in 1959, he founded and became director of Pakistan Institute of Maritime Affairs (PIMA) which he remained associated with until his death in 2004.
He avoided politics and provided no commentaries on conflicts and wars with neighboring India in successive years of 1965, 1971, and 1999. He died of old age on 27 February 2004 and was buried in a military graveyard in Karachi.
In his honor, the government established the “HMS Choudhri Memorial Hall” at the National Defence University in Islamabad in 2005.