Russell Charles Sylvester Manning (born 10 January 1945) is an Australian former rugby union international.
Manning was born in Brisbane and attended Brisbane Boys' College. As a schoolboy, he was a 1st XI cricket and 1st XV rugby team member, then played first-grade in both sports while studying law at the University of Queensland.
A fullback, Manning was capped once for the Wallabies, against the All Blacks at Wellington's Athletic Park in the only Test of the 1967 tour. He retired a season later to concentrate on a legal career.