Lieutenant-General Sir Pratap Singh, GCB, GCSI, GCVO (21 October 1845 – 4 September 1922), was a Maharaja of the princely state of Idar (Gujarat), administrator and Regent of Jodhpur and heir to Ahmednagar later renamed as Himmatnagar from 1902 to 1911.

Following the death of the ruler of Idar in 1901, Pratap Singh was Maharajah of that state from 1902 until he resigned in favor of his adopted son in 1911 to return to Jodhpur to be regent.

[citation needed] Commissioned in the Jodhpur Risala in 1878, Singh served during the Second Afghan War and was mentioned in dispatches.

[5] Even as an elderly man of 70, Sir Pratap commanded his regiments during the First World War in France and Flanders from 1914 to 1915 and in the Palestine Mandate at Haifa and Aleppo.

[citation needed] In 1911, Pratap abdicated the gadi (throne) of Idar in favour of his adopted son and nephew, Daulat Singh.