Ronald Rutherford Elvidge (2 March 1923 – 30 March 2019) was a New Zealand rugby union player. He played as a second five-eighth and centre. He was a member of the New Zealand national side, the All Blacks, from 1946 to 1950. He played 19 matches for the All Blacks, including seven as captain and nine internationals. He also played for Otago at a provincial level. He was born in Timaru. He later worked as an obstetrician and gynaecologist. After the death of Wally Argus in 2016, Elvidge became the oldest living All Black.