Smith

Regular characters and companions

 * John Smith, a common alias of the Doctor
 * Sarah Jane Smith
 * Luke Smith
 * Mr Smith

Other characters

 * John Smith, the Human version of the Tenth Doctor, from Human Nature/Family of Blood
 * John Smith of the Seventh Doctor, from Human Nature
 * Lavinia Smith

Other uses

 * John Smith and the Common Man, a rock group

Titles

 * Smith and Jones