Raj Kumar Yadvendrasinhji (born c. December 1916, date of death unknown), a member of the Jamnagar royal family, played first-class cricket in India from 1935 to 1947.
Yadvendrasinhji made his first-class debut in 1934-35, and played in the Nawanagar team that won the Ranji Trophy final in 1936-37, along with his cousins Indravijaysinhji and Ranvirsinhji. Batting at number nine, he made 39 not out and 45 not out, sharing a ninth-wicket partnership of 76 in the first innings with Ranvirsinhji, and a tenth-wicket partnership of 133 in 96 minutes in the second innings with Mubarak Ali.
He continued to play for Nawanagar with moderate success until 1947-48. He twice made his highest score of 58. In 1945-46, against Baroda, he made 58 and 27 and took a wicket in each innings. In his next match, in 1946-47, he top-scored with 58 in the second innings when Nawanagar lost by an innings to Bombay.