Ibrahim bey Musa Agha oghlu Usubov (Azerbaijani: İbrahim bəy Musa Ağa oğlu Usubov; Russian: Ибрагим-Ага Усубов; March 6, 1872 – June 16, 1920) was an Azerbaijani Major General in Russian Imperial Army and Azerbaijan Democratic Republic.

Receiving military upbringing and discipline from his father, Ibrahim bey Usubov went to famous Constantine Artillery School.

For his bravery in the battles against mountain peoples in village Dargo and Gerzel on January 28, 1845 he was awarded with Order of Saint Stanislaus of 3rd degree.

[3] In 1910, he married Govher Khanum who was the youngest daughter of the Transcaucasian Mufti Mirza Huseyn Afandi Qayibov.

On October 14, 1914, battalion headed by Usubov attacked positions near the Mizinec village pushing Austrian forces back.