Roger Carl Brandon Michaelson (born 31 March 1941) is a Welsh former international rugby union player.
Michaelson was born in Porthcawl and educated in England, at Clifton College and Christ's College, Cambridge.
A number eight, Michaelson captained the Cambridge varsity XV. He also played for Averavon and London Welsh during his career, while winning one Wales cap, in a home loss to England in the 1963 Five Nations Championship.
Michaelson ran a fruit and veg business in Kent for many years.