Gohar Ayub Khan (Urdu: گوہر ایوب خان; 8 January 1937 – 17 November 2023) was a Pakistani politician, businessman, army officer, and a leader of the Pakistan Muslim League (N), who held ministerial positions during the administration of prime minister Nawaz Sharif.

Gohar Ayub Khan hailed from the village of Rehana, located in the Haripur District of Khyber Pakhtunkhwa province and belonged to the Tareen tribe of ethnic Pashtuns. He was fluent in Hindko and Pashto. He was the son of military dictator former president and field marshal, Ayub Khan, and played an influential role in sustaining his father's presidential rule after the 1965 presidential election. Educated at the Royal Military Academy Sandhurst, Gohar Ayub Khan was commissioned in the Pakistan Army in 1959. During his military service, he served as his father's aide-de-camp, travelling with him on several foreign trips. Upon his resignation in 1962 with the rank of captain, he established a business conglomerate and entered politics in 1974.

Khan contested the 1977 general election through the Tehrik-e-Istiqlal platform and joined the Islamic Democratic Alliance (IDA) in 1988. After the 1990 general election, he was appointed the 14th Speaker of the National Assembly of Pakistan. He became the 20th Minister of Foreign Affairs after securing his seat with a heavy margin in the 1997 general election. Later he shifted to the energy department, serving as Minister for Water and Power beginning 7 August 1998. His term was abruptly ended after the 1999 Pakistani coup d'état by General Pervez Musharraf, and he subsequently retired from national politics.

Gohar Ayub Khan was born on 8 January 1937, in the village of Rehana, in Haripur District during the British Raj in the North-West Frontier Province into a Pashtun military family. A native Hindko speaker, Gohar Ayub belonged to the Tareen tribe of Pashtuns. His father, Ayub Khan, was a senior commanding officer in the British Army and later ascended to staff and field operational assignments in the Pakistan Army. Ayub Khan subsequently became President of Pakistan through a bloodless military coup that commenced in 1958.

Gohar Ayub was sent to study at the military-controlled Army Burn Hall College and eventually moved on to attend Saint Mary's Academy, a private school in Rawalpindi. Gohar Ayub joined the Pakistan Army in 1957, and trained at the Royal Military Academy Sandhurst in the United Kingdom. Upon his return from the UK, he began active duty with the Pakistan Army and started to serve on staff appointments. In 1958 he began to serve as his father's aide-de-camp, travelling with him on several foreign trips in Europe, the Americas, the Soviet Union, and Asia. He did not rise beyond the rank of Captain during his time in the army, despite his father's support. In his army records, there are allegations of professional and behavioural misconduct.

Gohar Ayub was prematurely given retirement in 1962 by the Army's Promotion Branch, despite his father's efforts to stop the investigations against his son. After his early retirement, he and his father-in-law, General (retired) Habibullah Khan established a private industrial firm, the Universal Insurance Co. Ltd.

During the 1971 War, Gohar Ayub briefly returned to active service, seeing action in the Punjab border areas.

Gohar Ayub reportedly played an influential, but controversial, role in Karachi after his father's election in the allegedly rigged 1965 presidential election against Fatima Jinnah. This move led to fierce clashes between rival political groups. Gohar Ayub also faced criticism during that time on questions of family corruption and cronyism through his business links with his father-in-law.