Purushottam Das Tandon was a freedom fighter from Uttar Pradesh in India, of Punjabi Khatri descent. He is widely remembered for his efforts in achieving the Official Language of India status for Hindi. He was revered as Rajarshi. Purushottam Das Tandon was born at Allahabad. After obtaining a degree in law and an MA in history, he started practising in 1906 and joined the bar of Allahabad High Court in 1908 as a junior to Tej Bahadur Sapru. He gave up practise in 1921 to concentrate on public activities.