Ahmad Zaidi Adruce bin Muhammed Noor (Jawi: أحمد زيدي أدروس بن محمد نور‎; 29 March 1924 – 5 December 2000) was a Malaysian politician, statesman, educator and nationalist who served as the fifth Yang di-Pertua Negeri (Governor) of Sarawak. He was the longest-serving governor in Sarawak's history, holding office from 1985 until his death in 2000. He is also remembered as the first Sarawakian bumiputera to earn a Master of Arts degree from a British university, the University of Edinburgh.

Ahmad Zaidi Adruce bin Muhammed Noor was born on 29 March 1924 in Kampung Semop, near the Rajang River in central Sarawak, to Mohammad Noor and Siti Saadiah. His father was a farmer, while his mother was a housewife. He received a "relatively good" education for a native of Sarawak under British colonial rule.

During his early life, Ahmad Zaidi was adopted by descendants of the prominent Malay nobleman, Syarif Masahor. Sharifah Mai, a daughter of Syarif Masahor, had an unmarried daughter named Sharifah Dayang Aisah, who later adopted Ahmad Zaidi. Sharifah Mai also had a childless son, Wan Abu Bakar Adruce.

At the age of five, Ahmad Zaidi Adruce was enrolled in two schools in Sibu: Chung Hua Primary School and Abang Ali Primary School. It was during this time that he developed an interest in poetry, gymnastics, and acting. At the age of 12, he passed his Standard Seven examination with "exemplary marks" — an exceptional achievement for a young man born and raised in Sarawak. Ahmad Zaidi was an outstanding student, consistently placing either first or second in his class throughout his primary and secondary education.

Following his Standard Seven examination, Ahmad Zaidi Adruce moved to Kuching in 1936 to continue his studies at St. Thomas School, where he graduated with a Junior Cambridge qualification in 1938. Out of a class of 63 students, he was among only seven who passed — and the only bumiputera among them. He later attended the Anglo-Chinese School in Singapore in 1938 and graduated in 1939, at the age of 15, with a Cambridge School Certificate, becoming the only bumiputera to attain such a distinction at the time.

In November 1940, Ahmad Zaidi Adruce enrolled at Sultan Idris Training College in Tanjung Malim, Perak (now Universiti Pendidikan Sultan Idris). He studied there until the Japanese invasion in 1941 forced him to flee to Singapore. In 1942, he was sent to Java to study veterinary medicine at Buitenzorg College in Bogor. However, his studies were disrupted by the end of the Second World War and the subsequent political upheaval in Indonesia. Despite these challenges, he remained in Java and aligned himself with Indonesian republicans after the Dutch returned to reassert colonial control.

Between 1946 and 1947, Ahmad Zaidi Adruce became actively involved in the Indonesian National Revolution. He joined the Indonesian Navy's 4th Base (Pangkalan IV Angkatan Laut Republik Indonesia or ALRI) based in Mojokerto, East Java. He was appointed as a captain and served as head of the Special Operations Intelligence (SOI) unit.

Ahmad Zaidi Adruce played a key role in covert military operations, which included espionage, infiltration, and logistical missions. His knowledge of Kalimantan's geography and its people made him "a valuable asset" to Indonesian forces seeking to gain control in areas where Dutch colonial influence remained strong. He was also instrumental in recruiting local youths from Kalimantan, contributing to the formation of the ALRI Secret Battalion (Batalyon Rahasia ALRI).