PNS Shah Jahan of Shahjahan may refer to one of the following ships of the Pakistan Navy

Pakistan Navy

The Pakistan Navy is the naval warfare/service branch of the Pakistan Armed Forces. Pakistan's Navy is responsible for Pakistan's coastline along the Arabian Sea and the defense of important civilian harbors and military bases...

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, the former British HMS Charity (R29) launched in 1944; acquired by the Pakistan Navy via the United States in 1958; ship was badly damaged in 1971 in the Indo-Pakistani War

Indo-Pakistani War of 1971

The Indo-Pakistani War of 1971 was a military conflict between India and Pakistan. Indian, Bangladeshi and international sources consider the beginning of the war to be Operation Chengiz Khan, Pakistan's December 3, 1971 pre-emptive strike on 11 Indian airbases...

; scrapped in 1982, the former American USS Harold J. Ellison (DD-864) launched in 1945; acquired by the Pakistan Navy in October 1983 and classed as a ; sunk as a missile target in 1994, the former British Type 21

Type 21 frigate

The Type 21 frigate or Amazon-class frigate was a Royal Navy general-purpose escort designed in the late 1960s, built in the 1970s and that served throughout the 1980s into the 1990s.-History:...

 frigate

Frigate

A frigate is any of several types of warship, the term having been used for ships of various sizes and roles over the last few centuries.In the 17th century, the term was used for any warship built for speed and maneuverability, the description often used being "frigate-built"...

HMS Active (F171) launched in 1972; acquired by the Pakistan Navy in 1994 and classed as a ; in active service,