John Smith

John Smith (or similar terms) may refer to:


 * John Smith, an alias frequently used by the Doctor.
 * John Smith, an alias used by the third Doctor, (Spearhead from Space episode)
 * John Smith, a human identity created by the Seventh Doctor (NA: Human Nature)
 * John Smith, a human identity created by the Tenth Doctor (DW: Human Nature / The Family of Blood)
 * John Smith, an alias used by the Master (BFA: Master)
 * John Smith and the Common Men, a pop music act popular circa 1963 (DW: An Unearthly Child)
 * Jonathan Smith (IDW: The Time Machination)