Lieutenant Boyd Alexander (16 January 1873 – 2 April 1910) was an English officer in the British Army, as well as an explorer and ornithologist.

On his mother's side he was the grandson of David Wilson,[citation needed] the founder of the Great Eastern Hotel in Calcutta.

In 1908 he was awarded the Founder's Medal of the Royal Geographical Society "for his three years' journey across Africa from the Niger to the Nile.

Boyd was killed in a dispute with locals near Nyeri, 70 miles (110 km) north of Abéché, the capital of Wadai.

[6] At St Dunstan's Church, Cranbrook, there is an alabaster memorial to Boyd and Claud Alexander by William Robert Colton.