Robert Sinclair

Politics

• Sir Robert Sinclair, 1st Baronet, of Longformacus, MP of Scotland for Berwickshire
• Sir Robert Sinclair, 3rd Baronet, of Longformacus, MP of Scotland for Berwickshire
• Sir Robert Sinclair, 3rd Baronet, of Stevenston, MP of Scotland for Haddingtonshire
• Robert Sinclair, 1st Baron Sinclair of Cleeve, British businessman and public servant

Sports

• Rob Sinclair (footballer, born 1974), for Maidstone United
• Rob Sinclair (footballer, born 1989), English footballer for Forest Green Rovers
• Bobby Sinclair, Scottish footballer for Falkirk and Darlington

Other

• Robert Sinclair (bishop), bishop of Orkney and bishop of Dunkeld
• Robert Sinclair (locomotive engineer), chief mechanical engineer of the Caledonian Railway
• Robert B. Sinclair, film and theater director
• Robert J. Sinclair, American automotive industry executive
• Sir Robert Sinclair, 9th Baronet