Raja Dinesh Singh (19 July 1925 – 30 November 1995) was an Indian politician.

He was educated at The Doon School, Dehradun and at Lucknow University.

He married Neelima Kumari of the Tehri-Garhwal ruling family, in 1944, and had six daughters.

His sixth daughter is Ratna Singh, who was also a member of Lok Sabha from the same Pratapgarh constituency.

At the time of his death, he was a minister without portfolio in the Cabinet headed by P. V. Narasimha Rao.