Thomas Nicolson

Thomas Nicolson or Nicholson may refer to:


 * Thomas Nicolson of Carnock (died 1646), commissioner for Stirlingshire
 * Sir Thomas Nicolson, 6th Baronet (died 1693), of the Nicolson baronets
 * Thomas Nicolson (bishop) (1645–1718), Roman Catholic bishop
 * Thomas Nicolson, 4th Lord Napier (1669–1688), Scottish peer
 * Sir Thomas Nicolson, 1st Baronet (died 1728), of the Nicolson baronets
 * Thomas Nicholson (architect) (1823–1895), British architect
 * Thomas Nicholson (cricketer) (1876–1939), English cricketer
 * Tom Nicolson (1879–1951), British track and field athlete
 * Thomas Nicholson (educator), American health educator and drug policy specialist