Sam Johnston

Samuel Johnston or Sam Johnston may refer to:

• Sam Johnston (Yukon politician) (born 1935), politician in the Yukon, Canada
• Sam Johnston (New Brunswick politician), politician in the New Brunswick, Canada
• Sam Johnston (wrestler) (born 1987), American professional wrestler better known as Sami Callihan
• Sammy Johnston (born 1967), Scottish footballer
• Samuel Johnston (1733–1816), American lawyer and statesman
  • SS Samuel Johnston, a Liberty ship
• Samuel Johnston (footballer) (1866–1910), Irish footballer
• Samuel Johnston (Waterview) (died 1924), Australian pioneer