Mir Ahmed Ali, Nawab Ali Nawaz Jung Bahadur ( In Urdu – میر احمد علی نواب علی نواز جنگ بہادر ) (born on 11 July 1877) was chief engineer during the rule of Nizam of Hyderabad. He was responsible for major irrigation works, buildings and bridges in Hyderabad State such as Osman Sagar, Nizam Sagar Himayat Sagar and Ali Sagar reservoir of Nizamabad district, also named after him. He served as a chairman of National Planning Committee on River training and Irrigation. Since 2014, Government of Telangana announced that his birthday 11 July will be observed as Telangana Engineer’s day.