William Garden Cowie (8 January 1831 – 26 June 1902) was bishop of the Anglican Diocese of Auckland, New Zealand, from 1870 to 1902.

Two years later, in 1857, he was appointed chaplain to the Forces in India, and served with Sir Colin Campbell's army at the capture of Lucknow in 1858, for which he received the Indian Mutiny Medal and clasp.

He was an important influence on the expansion and development of the Anglican Church in Aotearoa, New Zealand and Polynesia during the long period of his episcopate, and was also closely involved with the ordination of indigenous Melanesian clergy.

[4][1] [5] He was a visitor and governor of St John's College, Auckland, and was appointed a Fellow of the University of New Zealand in 1880.

During his visit to the United Kingdom in 1897, he received the degree Doctor of Divinity honoris causa from the University of Oxford.